liP internAtiOnAl Pte ltd (mg duff) magnesium Hull Anodes

LIP INTERNATIONAL PTE LTD 

Catalogue

Our PrOfile 


(M.G.DUFF) Protection Systems 

• Zinc Hull Anodes 

• Aluminium Hull Anodes 

• Magnesium Hull Anodes 

• Tanks Anodes 

• Fitting Out Anodes 

• Anodes for special applications 

LIP INTERNATIONAL PTE LTD (M.G. Duff ) have been supplying Sacrificial Cathodic Protection systems 

and equipment since 1954, and now offer one of the most comprehensive ranges of anodes and ancillary 

available anywhere. 

The product side of the company is backed by a highly skilled design and technical support team capable 

of preparing and servicing systems for all aspects of cathodic protection system and off-shore anodes.

Profile 

Cathodic Protection with 

Sacrificial ANODES 

2 

Corrosion 

When two dissimilar metals are connected in an electrolyte such as sea-water, 

a corrosion cell is formed in which one metal becomes an anode and suffers 

corrosion while the other metal becomes the cathode and is preserved. 

Anodic and cathodic areas exist on the surface of all steel structures due to 

slight variations in material composition, local stresses, differences in coating 

condition and availability of oxygen. 

On a bare steel plate in sea-water, these areas form on what is apparently 

a uniform surface. Since corrosion will result in metal loss, roughening and 

wastage will occur on an uncoated plate. 

Where an imperfect coating exists,corrosion will take the form of accelerated 

pitting at the location of the bare spots and eventual breakdown of the 

coating. 

Whatever the circumstances, in the absence of cathodic protection, corrosion 

will eventually occur. 

Cathodic Protection 

The principle of cathodic protection involves the introduction into the 

electrical circuit of a metal that is more electro-negative than the existing 

anodic and cathodic areas. 

This additional metal becomes the anode and will corrode while providing 

current to the metal it is protecting, thereby overcoming the local anodic 

areas and making them cathodic. 

The classic cathodic protection solution to a galvanic corrosion problem is 

to introduce an anode in a suitable alloy of magnesium, aluminium or zinc 

which will suffer corrosion and so be ‘sacrificed’ in protecting the cathode. 

This approach is used in Sacrificial Systems. 

As an alternative solution, the protective current needed to make the 

structure fully cathodic may be obtained by applying low voltage DC derived 

from normal AC mains supply. 

This is achieved by transformer/rectifiers which supply DC to specially 

designed ‘inert’ anodes which will dissipate large currents without themselves 

suffering significant wastage. This approach is used in Impressed Current 

Systems. 

Cathodic Protection Systems whether of Sacrificial or Impressed Current 

type can be either used as the sole method of corrosion control, or in many 

instances, in conjunction with a coating. 

Protection even with the best and most expensive coatings alone is seldom 

adequate. Coating are always vulnerable to damage and can only be as 

good as atmospheric and surface conditions permit at the time of their 

application. 

Cathodic Protection is therefore an essential ingredient in an overall corrosion 

control system for applications on ships as well as on off-shore structures. 

Jetties, storage tanks and pipelines both underground and sub-sea.

Ship Hull Protection 

Hulls of ships are prone to corrosion of an aggressive nature in the form of 

pitting unless they are cathodically protected. 

Protection with the best and most expensive coating alone is not enough 

because the coating is vulnerable to mechanical damage at sea or in port and 

to imperfections at the time of application. 

LIP INTERNATIONAL PTE LTD (M.G. Duff) have two-main types of sacrificial 

anodes: high purity zinc and aluminium. The M.G. impressed Current Systems, 

Hullmatic, is explained on a separate data sheet. 

For hull protection, zinc anodes with their high electrical efficiency, are of 

particular value when the aim is to restrict current output and so achieve a 

long system life from anodes of small bulk. 

Aluminium anodes combine high electrical capacity with light weight and 

offer a lower cost per amphere hour of available current and the need of 

fewer anodes. As an added benefit few anodes mean a reduced frictional 

resistance on the hull of the ship. 

Ship Tank Protection 

The corrosion pattern in cargo tanks of crude oil carriers in very different from 

that in the ship’s hull but can prove even more damaging and expensive. 

The cargo tanks are alternated with sea-water and in this environment, the 

corrosion problem takes the form of pitting on horizontal surfaces such as 

the inner bottom shell plating, the upper surfaces of stringer platforms and 

the face plates of longitudinal and transverse members. Uniforms wastage of 

vertical surfaces is inevitable. 

Pitting mar also occur in lower areas where water may be present beneath 

oil cargoes and where residual ballast water is present in tanks which are 

supposed to be empty. 

The wastage of internal surfaces of ‘permanent’ ballast tanks is usually uniform 

in nature and can be inhibited by the installation of anodes distributed evenly 

throughout the internal structure. 

Corrosion of these types can be controlled simply and economically with 

either Zincalloy or Alalloy anodes or a combination of both, depending on 

the particular environmental conditions of each installation. 

Zincalloy can be invaluable in tank applications, particularly in the upper 

areas where the installation of aluminium alloy anodes is restricted while 

Alalloy provides the most affective and economical solution to the corrosion 

problem. 

Flexible Alalloy, an extruded aluminium alloy anode, can be manipulated 

through complex double bottom tanks structures and fixed by clamps. 

Welding is eliminated and labour costs are reduced. Whatever the galvanic 

corrosion problem on a ship,M.G.Duff have the experience in both design and 

protection to offer the optimum solution backed by the latest technological 

development and worldwide service capability. 

3 

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SYSTEM DESIGN 

System Design 

LIP INTERNATIONAL PTE LTD (M.G. Duff) experienced engineer provide cathodic protection system design from our 

latest computer design software. Classification Society approval can be obtained on an owner’s behalf. To provide a good 

cathodic protection system design, it would be useful to have the following information. 

4 

ACTUAL WETTED SURFACE AREA (WSA) WHICH CAN BE CALCULATED FROM 

FOR SHIP’S HULLS FOR SHIP’S TANKS 

1. Principal dimensions, ie length between perpendiculars, 

breath moulded and maximum draught (if protection 

is required to stern frame and rubber system only the 

maximum draught and or dwt tonnage are required) 

1. Owner’s drawings,ie mid-ship section and GA or capacity 

plan, steelwork/structural drawings for peak tanks. 

2. Block coefficient 2. Type and extent of coating with estimate of percentage 

breakdown 

3. Type of coatings 3. Desired system life and percentage time in ballast 

4. Desired system life 4. Cargoes to be carried, type of tank (ballast only or cargo/ 

ballast) 

5. Nature of service 5. Any heating coils, their material and whether they are 

insulted from the structure 

6. Is propeller bonded with slip-ring 6. Classification Society Approval required 

7. Number of propeller, rubber, trusters, seachests 

ANY SPECIAL FACTORS 

Anode Requirement - Full Hull 

The quantity and selection of sacrificial anodes required to protect the external hull 

of a specific vessel are calculated by taking into account of the size, type of vessel, 

service conditions and the condition of the hull – whether it is new or in service. 

Current densities gives a general indication of recommendations for a broad range 

of vessel types. As shown below are generally taken as recommendations. 

NEW BUILDING mA/m2 IN SERVICE mA/m2 

Ocean-going ships (SPC Coated) 10 15 

Other ocean-going ships 12 15 

Coasters 14 20 

Ro-Ro ferries 14 20 

Trawlers 22 24 

Kort nozzle tugs 22 24 

Dredgers 24 27 

Ice vessels 25 30 

Tugs 18 22 

Having determined the number of anodes required, it is important to ensure that 

the current distribution is effective and with the propeller located at the stern of 

the vessel – an area of major turbulence – it is necessary to fit a higher proportion 

of the anodes in the after part of the vessel, particularly close to the propeller.

The diagram below shows a typical anode distribution for a large vessel. 

Typical External Hull Anode Arrangement 

(See diagram below for 

arrangement of anodes on 

stern frame and rudder) 

As a guide,it is recommended that 60% of the anodes are mounted in the after half and the balance in the forward section. 

Due to the possibility of the anchor cables abrading the forward quarters and removing the paint, more anodes should be 

fitted in this part than at midships but position where the anchor cable actually contacts the hull should be avoided. 

Anodes Requirements for Stern Frame Protection 

For stern frame and rudder protection, LIP INTERNATIONAL PTE LTD (M.G. Duff) have devised the following tables of 

typical quantities and types of anode required for various sizes of vessel. 

DRAFT (METRES) DWT 

(TONES) 

NUMBER OF ANODES 

M.G. 117 OR M.G. 124 OR M.G. 14Z 

4.5 – 7 2,000 – 5,000 12 14 

7 – 8 5,000 – 8,000 14 18 

8 – 9 8,000 – 10,000 16 20 

9 – 10 10,000 – 20,000 18 22 

10 – 11 20,000 – 30,000 20 26 

11 – 12 30,000 – 40,000 24 30 

12 – 13 40,000 – 60,000 30 38 

13 – 14 60,000 – 80,000 36 44 

14 – 15 80,000 – 115,000 40 24 50 

15 – 17 115,000 – 200,000 52 30 64 

17 – 19 200,000 – 66 38 82 

Once the quantity of anodes required has been assessed distribution,particularly in this area,is critical.For vessels of 40,000 

dwt or more, the distance between anodes on the rudder should not exceed 4m.The diagram left shows typical systems. 

1.1 x Propeller dia 

PROPELLER DIA 

Anodes not to be fitted within 

shaded area 


Stern Frame Anode Layout 


PROPELLER DIA 

Anodes not to be fitted within 

shaded area 


With all stern frame systems anodes should be positioned to avoid areas of the hull lying directly ahead of the propeller 

blade tips and in the area within the outer half of the propeller radius. Anodes placed in these positions can cause 

cavitation and a consequent reduction in the efficiency of the propeller. 

If the propeller is bonded to the hull by a slip ring the number of anodes required, as shown in the anode quantity table, 

will increase by 30%. 

5 

Profile

Profile 

Installation Drawings 

Plans showing anode layout traced from owners’ drawings, 

are provided free of charge when anodes are supplied.Bilge 

keels are not usually shown on a General Arrangement 

drawing so it is important that LIP INTERNATIONAL PTE LTD 

(M.G. Duff) is always advised of the extent and location of 

the bilge keels. 

Anode Requirements For Cargo 

and Ballast Tank Protection 

The type of cargo to be carried and the time that the tank is 

in ballast affect the current which must be made available 

for protection. 

6 

TYPE OF TANK CARGO TO BE 

CARRIED 

Upper wing tanks 

Peak tanks 

Segregated ballast 

tanks 

Deep tanks 

Cargo ballast tanks 

(Spirit tankers) 

Double bottom 

tanks 

Cargo ballast 

RECOMMENDED 

CURReNT 

DENSITY 

Salt water 130mA/m2 

(12m/A/ft2) 

Salt water 110mA/m2 

(10mA/ft2) 

(Petroleum 

product/salt 

water) 

Salt water 

Crude oil/salt 

water 

90mA/m2 

(8mA/ft2) 

Where tanks are painted, additional protection should 

be provided against paint breakdown: An initial current 

density of 5mA/m2 should be considered, then 10m/Am2 

should be added for every 10% of anticipated breakdown 

over the life of the cathodic protection system. Therefore, 

for a system with 20% paint breakdown the current density 

should be 25mA/m2. 

Once the number of anodes required has been calculated, 

their distribution in the tanks must be determined. The 

following table gives the rules which should be observed 

for the effective protection against corrosion. 

TYPE OF TANKS CURReNT 

ReqUIReMeNT 

Centre tanks 2/3 in the 

bottom of the 

tank 

1/3 in the upper 

areas 

Wings tanks ½ in the bottom 

of the tank 

½ in throughout 

the reminder of 

the tank 

Permanent ballast 

tanks 

Double bottom 

tanks 

ANODE 

DISTRIBUTION 

even 

distribution over 

surface area 

At least one 

anode in each 

membrane box 

RECOMMENDED 

ANODE 

MATERIAL 

Aluminium and/ 

or zinc 


or zinc 


or zinc 


or zinc 

Special note should be taken of the positioning of 

aluminium anodes in tanks carrying crude oil or petroleum, 

or other inflammable products. Certain Classification 

Societies have restrictions on the height at which these 

may be placed because of the potential for a spark to be 

produced should an anode fall from a defined height. 

The Lloyds Registers of shipping, for example, rules that 

the potential energy of an aluminium of aluminium alloy 

anode should not exceed 275J (28kg f m). 

Pit-Guard Anodes 

LIP INTERNATIONAL PTE LTD (M.G. Duff) Pit-Guard anodes 

are specially designed to prevent pitting attacks on the 

bottom shell plating of cargo and ballast tanks. Lying 

flat on the bottom shell plating, they provide cathodic 

protection against corrosion in what are often deemed to 

be ‘empty’ tanks, but which in fact contain residual ballast 

water that has not been stripped from the tank. They also 

provide protection when brine settles out of oil cargoes. 

Because residual water remaining in cargo/ballast tanks 

will be oily, the self-cleaning property of Alalloy Anode is 

advantageous in this application. 

Pit-Guards are provided with an integral clamp for easy 

attachment to the scallop holes in the bottom longitudinals. 

This means they can be quickly fitted without the need to 

gas-free for hot work. 

Bearing in mind that these anodes are small and may be 

permanently submerged (while ballast may be carried for 

40 or 50% of the time), Pit-Guards should be inspected 

regularly and replaced promptly when necessary.

Anodes for special Applications 

MOORING CHAIN ANODES 

Aluminium mooring chain anodes 

suitable for protection of mooring 

chains in estuarine and sea water 

locations for 3/8”; ½”; ¾”; 1” dia 

chain\(tested chain). 

ZINC ANODES FOR HIGH PERFORMANCE HULLS 

ZD42 zinc strip offer (44mm x 11mm cross section 

in lengths up to 72”) designed for high performance 

hulls, especially aluminium where a low profile 

anode system is required. There is also the ZD55 

zinc disc for recessed hull fitting. 

Zinc aluminium and magnesium 

hanging anodes for fitting out and 

laying up protection with P.V.C. 

covered steel cable suitable for 

fitting replacement anodes. 

Installation Drawings 

Plans showing anode layout, traced form owners’ drawing, are provided free 

of charge when anodes are supplied. 

Corrosion Survey Services LIP INTERNATIONAL PTE LTD (M.G. Duff) have a 

team of experienced marine corrosion engineers ever ready to carry out hull 

and ballast tank surveys before recommending an optimum solution to the 

clients. 

Anode Element Analysis & 

Electro-Chemical Capacity Testing 

The Chemical composition of the produced anodes is analysed by using the 

Spectro Analysis Equipment and Electro Chemical Capacity Testing is also 

carried out for every 15MT of anode produced based on DNV specification. 

HANGING ANODES 

CONSIDER AND COOLING SYSTEM ANODES 

Offering a full range of zinc and soft iron 

anodes and anode material including 

pencil anodes, plates, discs, bars and 

rods. 

ZINC SHAFT ANODES 

Zinc shaft anodes offer the protecting stern gear on 

GRP performance craft where the use of hull anodes 

is prohibited. Available in metric and imperial sizes 

from ¾”; 19mm to 70mm dia shaft size. 

ZD57 zinc hanging anode 2kg. 

MD57 magnesium hanging 

anode (50mm dia x 75mm fitted 

with 3m stainless steel hanging 

cable). For use where hull fixed 

anode system are impracticable. 

LIP INTERNATIONAL PTE LTD (M.G.Duff) Zinc, Aluminium and Magnesium Anodes are available for Cathodic Protection of 

jetty and dolphin piles, sheet steel jetties, pontoons. Lock gates etc. 

7 

Profile

Profile 


Technical Information 

M.G Duff Zinc-US Mil. Spec. A-18001 H. 

Specification: Cu 0.005 Max 

Al 0.10 – 0.50 

Si 0.125 Max 

Fe 0.005 max 

Cd 0.025 – 0.15 

Pb 0.005 Max 

Zn Remainder 

8 

ZINC ROUND SHEET 

SIZE (DIAMETER X T) WEIGHT (KG) 

60mm x 10mm 0.2 

90mm x 15mm 0.7 

130mm x 17mm 1.4 

125mm x 25mm 1.5 

125mm x 25mm 2.1 

150mm x 25mm 3.1 

150mm x 40mm 5.1 

200mm x 35mm 7.8 

200mm x 40mm 8.2 

250mm x 26mm 8.8 

SHAPE 

DIAMETER 

LENGHT 

US Mil Spec A-18001-J 

Specification: Cu 0.005 Max 

Al 0.10 – 0.50 

Si 0.125 Max 

Fe 0.005 max 

Cd 0.025 – 0.15 

Pb 0.005 Max 

Zn Remainder 

Efficiency: 95% 

Capacity: 7870 Amp. h./kg 

Consumption: 11.2 Kg/Amp.Year 

Potential: -1050mV, against Ag/ 

Ag CI.Ref. 

DIAMETER 

(MM) 

LENGTH 

(MM) 

M.G. Duff Aluminium (A1 ZN in Type) 

Specification: Fe 0.10 max 

Si 0.10 Max 

Cu 0.006 Max 

Zn 2-6.5 

In 0.001-0.02 

Al Remainder 

Efficiency: 90% 

Capacity: 2700 Amp. h./kg 

Consumption: 3.27 Kg/Amp.Year 

Potential: -1100mV, against Ag/ 

Ag CI.Ref. 

ZINC ALLOY ROD 

WEIGHT 

(KG) 

DIAMETER 

(MM) 

LENGTH 

(MM) 

WEIGHT 

(KG) 

15 300 0.4 80 300 11.0 

20 300 0.7 85 300 12.6 

25 300 1.4 90 300 14.2 

30 300 1.7 100 300 17.0 

35 300 2.0 115 300 22.0 

40 300 2.68 120 300 25.0 

45 300 3.6 125 300 27.5 

50 300 4.3 140 300 32.0 

55 300 5.3 150 300 37.0 

60 300 6.2 160 300 42.0 

65 300 7.5 180 300 54.0 

70 300 8.3 200 300 65.0 

75 

SHAPE 

300 9.7 

DIAMETER LENGHT

Zinc Hull, Ballast tank anodes, Plugs, 

Rods and RePlacement elements 

9 

Zinc Hull, Hull, Ballast tank anodes, Plugs, Rods and RePlacement RePlacement elements

Zinc Hull, Ballast tank anodes, Plugs, Rods and RePlacement elements 

Zinc alloy anode 

Zincalloy 

10 

characteristics 

Zincalloy anodes are cast from high grade zinc alloyed to ensure an event corrosion 

pattern, reliable electrical efficiency and long working life. 

materials 

Zincalloy anodes are cast to U.S. Military specifications U.S. MIL A-1800IJ and yield 

780 amphere hours per kilogram of alloy with a solution potential of -1050 mV as 

measured against a silver/silver chloride reference cell. 

The specification demands stringent analytical control and LIP INTERNATIONAL PTE 

LTD (M.G. Duff ), with number of casting facilities throughout the world, use the very 

latest analysis and quality control techniques to produce products of a consistently 

high standard. 

Product Range 

The standard range of zincalloy anodes is listed overleaf. However, LIP 

INTERNATIONAL PTE LTD (M.G. Duff ) have the facility of designing and producing 

anodes to meet any individual requirement and make their own moulds to do so. 

Thereby, they are ensure both the optimum solution to any particular problem and 

total control over the quality of the finished anodes. 

applications 

Zincalloy anodes are particularly suitable for ballast tanks and hull of ships, jetties 

and subsea pipeline applications in bracelet configuration. Zincalloy anode in not 

suitable in high temperature environments of 50C and above. 

chemical composition 

U.S.-Mil-A-1800 I J 

Aluminium 0.10 – 0.50% 

Cadmium 0.025 – 0.07% 

Iron 0.00.5% Max. 

Copper 0.005% Max. 

Lead 0.006% Max. 

Others 0.10% Max. 

Zinc remainder 

electrochemical properties 

Nominal Potential: -1.05 V, Ag/AgCl 

Nominal Capacity: 780 Amphere hours per kg


Hull 

A 

B 

A 

B 

A 

B 

A 

B 

C 

D 

C 

D 

C 

D 

C 

D 

TYPE A CORE 

DIMS 

(ZINCALLOY) WELDED ZINC HULL ANODE 

B C D NETT 

WT 

GROSS 

WT 

ZD 6Z 350 38 x 6 270 150 32 6.5 7.1 

ZD 11Z 550 38 x 6 400 150 32 11.2 12.1 

ZD 14Z 700 38 x 6 550 130 50 21.4 22.5 

ZD 17Z 700 50 x 9 550 130 65 24.6 27.0 

ZD 19Z 700 50 x 9 550 130 75 32.3 34.7 

ZD 18Z 700 50 x 9 550 130 96 42.5 44.9 

ZD 24Z 1075 50 x 9 915 130 50 32.8 36.5 

TYPE A CORE 

DIMS 


B C D NETT 

WT 

GROSS 

WT 

ZD 50 455 30 x 4 305 75 40 4.6 5.0 

ZD 64 455 30 x 4 305 90 45 6.4 6.8 

ZD 81 455 30 x 4 305 152 32 8.1 8.5 

ZD 100 455 30 x 4 305 152 38 9.6 10.0 

ZD 140 625 30 x 6 456 102 53 14.0 15.0 

TYPE A CORE 

DIMS 


B C D NETT 

WT 

GROSS 

WT 

ZD 170 750 38 x 6 585 134 37 17.0 18.3 

ZD 250 750 38 x 6 585 142 53 25.0 26.3 

ZD 350 750 38 x 6 585 149 69 35.0 36.3 

WELDED HULL ANODE ZINCALLOY 

TYPE A B C D NETT WT GROSS WT 

S – 2 238 150 75 25 1.3 1.7 

S – 3 300 200 100 20 2.4 3.0 

S – 4 300 200 100 30 3.6 4.2 

S – 4E 300 200 100 40 5.65 6.25 

All weights in kilogram. 

All dimensions in millimeter. 

All weights and dimensions are nominal. 

11 

Zinc Hull, Ballast tank anodes, Plugs, Rods and RePlacement elements




12 

A 

A 

D 

A 

A 

D 

E F 

B 

D 

C 

B 

C 

B 

C 

B 

C 



S – 6 300 150 270 20 5.8 6.5 

S – 8 300 150 270 25 7.3 8.0 

S – 9 300 150 270 30 8.8 9.5 

S – 9E 300 150 270 40 11.3 12.0 

S – 9F 300 150 270 50 13.9 14.6 


TYPE A B C NETT WT GROSS WT 

S – 18 800 75 50 18.3 19.0 

BOLTED HULL ANODE ZINCALLOY 


B2 150 75 25 75 1.35 1.45 

B3 200 100 20 110 2.36 2.5 

B4 200 100 30 110 3.46 3.6 

B4E 200 100 40 110 4.06 4.2 

B6 300 150 20 160 5.7 5.9 

B8 300 150 25 160 7.1 7.3 

B9 300 150 30 160 8.1 8.3 

B9E 300 150 40 160 10.8 11.0 

B9F 300 150 50 160 13.6 13.8 

B9G 300 150 75 160 21.8 22.0 

B12 300 200 40 160 15.0 15.2 

B12E 300 200 65 160 26.6 26.8 

(ZINCALLOY) BOLTED ZINC HULL ANODE 

TYPE A B C D E F NETT WT GROSS 

WT 

B36Z 305 76 36 205 19 50 3.7 4.1 

B45Z 305 80 38 205 17 50 4.1 4.5 

B84Z 300 150 30 200 18 32 7.7 8.4 

B114Z 456 102 53 230 23 60 11.4 12.1 



All weights and dimensions are nominal.


tank 

B 

F 

A 

C 

A 

A 

D 

C 

70 

100 

PIT GUARD TANK ANODES (ZINCALLOY) 

TYPE A B C NETT WT 

ZD 2247T 332 70 76 10.0 

ZD 2252T 342 76 63 10.0 

* Anode lengths given in the table are standard but other lengths can be supplied to order. 

TYPE A CORE 

DIA 

(ZINCALLOY) ZINC TANKS ANODE 

B C D E NETT 

WT 

GROSS 

WT 

ZD 25T 1066 13 610 57 64 19 10.6 11.3 

ZD 35T 1066 13 610 69 77 23 15.2 15.9 

ZD 45T 1066 13 610 79 83 25 20.4 21.1 

ZD 50T 1676 13 1220 57 64 19 21.3 22.6 

ZD 70T 1676 13 1220 69 77 23 30.4 31.8 

ZD 90T 1676 13 1220 79 83 25 40.8 42.2 

ZD 110T 1676 19 1220 91 94 32 50.0 53.8 





13 



Zinc alloy 

Rods & anodes 

14 

ZINC HULL ANODES SHAFT ANODES 

Z-3 

Z-4 

Z-10 

ZINC ROD 

Z-13 

Z-6 

Z-1 

Z-8 

Z-11 

Z-14 

Z-16 

Z-2 

Z-5 

Z-7 

Z-9 

Z-15 

Z-12 

Z-17 Z-18 

Z-20 

ZINC ANODES FOR VARIETY OF USAGE 

Z-25 

Z-19 

Z-21 

Z-22 Z-23 

Z-24 

Z-26

Zinc alloy 

Rods & anodes 

COUPLING 

WATER TIGHT DOOR HANDLE 

Z-37 

Z-27 

ZINC PLUG WITHOUT BRASS RETAINING 

ZINC PLUG WITH HExAGON BRASS ZINC ANODES 

M-CLAMP, U-BOLD, SHACKLE 

ZINC ANODES ZINC TANK ANODE 

Z-48 

Z-46 

Z-50 Z-51 Z-52 

Z-57 

Z-58 

Z-59 

Z-53 

Z-28 Z-29 Z-30 Z-31 Z-32 Z-33 

Z-38 Z-39 

Z-49 

Z-60 

Z-47 

Z-54 Z-55 Z-56 

Z-61 

Z-62 

Z-34 Z-35 

Z-40 Z-41 

Z-64 

Z-63 

Z-65 

Z-42 

Z-44 

Z-66 

Z-36 

Z-43 

Z-45 

15 



typical methods of attaching anodes For 

Hull and tank aPPlications 

16 

ExTERNAL 

External Hull applications. 

INTERNAL 

Z TYPE crank weld attachment for internal anodes. 

Tank application. 

SINGLE & DOUBLE CRANKWELD attachment for 

internal anodes. Tank application. 

M TYPE clamp attachment for internal anodes. 

Tank Application. 

E TYPE stud attachment for internal anodes. 


U BOLT attachment for internal anodes. 


STAND-OFF TYPE attachment for internal anodes. 


CLAMP TYPE for pitting prevention. Tank bottom 

application.

Aluminium & mAgnesium Hull, 

BAllAst tAnk & OffsHOre AnOdes 

Aluminium & mAgnesium Hull, BAllAst tAnk & OffsHOre AnOdes

Aluminium & mAgnesium Hull, BAllAst tAnk & OffsHOre AnOdes 

Aluminium Alloy Anode 

AlAllOy 

18 

Characteristics 

Alalloy anodes are cast from special aluminium alloys developed by LIP INTERNATIONAL PTE 

LTD (M.G. Duff ). Suitably formulated for specific application, they are characterised by light 

weight, smooth corrosion pattern, high electrical capacity and stability. Fewer anodes may 

be used for a given installed system is achieved. Flexible Alalloy anode is extruded onto a 

mild steel core wire from a special patented aluminium alloy. The flexibility and light weight 

of this extrude anode, together with the method of clamping permits its use in applications 

where the use of cast block anodes my be difficult or uneconomic. 

materials 

Different alloy formulations are available specially designed for different applications. 

Alalloy anodes are cast in alloys of aluminium and indium plus additions and have been 

developed specifically for use in sea-water. The materials are very stable in driving potential 

and efficiency even in electrolytes of varying conductivity and temperature. In normal seawater 

having resistivity of about 25 ohm cm, approximately 2700 ampere hours of current 

are provided by each kilogram of alloy which will maintain a potential of -1100mV when 

measured against a silver/silver chloride reference half cell. 

Product range 

The standard range of Alalloy anodes is listed overleaf. However, LIP INTERNATIONAL PTE 

LTD (M.G. Duff ) specialises in designing and producing anodes to meet any individual 

requirement and make their own moulds to do so. Thereby, they ensure both the optimum 

solution to each problem and total control over the quality of finished anodes. 

Applications 

Alalloy anodes are suitable for a wide variety of applications including the hulls and tanks of 

ship, fixed off-shore structure, semi submersibles, pipelines and jetties. 

ALALLOY III ALALLOY IV 

Chemical Composition: Zinc 2.8 - 6.5 % 2.8 - 6.5 % 

Indium 0.01 - 0.03 % 0.01 - 0.03 % 

Iron 0.13 % max. 0.22 % max. 

Silicon 0.21 % max. 0.21 % max. 

Copper 0.006 % max. 0.01 % max. 

Others (Each) 0.02 % max. 0.02 % max. 

Aluminium remainder remainder 

Electrical Properties: Nominal Potential: -1100 mV Ag/Agci -1100 mV Ag/Agci 

Nominal current capacity: 2700 Ah/kg 2600 Ah/kg



A 

A 

B 

A 

A 

B 

B 

D 

C 

C 

D 

B 

C 

C 

D 

TYPE A CORE 

DIMS 

(ALALLOY) WELDED ALUMINIUM HULL ANODE 

B C D NETT WT GROSS 

WT 

AD 131 300 25 x 6 200 95 30 1.0 1.4 

AD 130 420 38 x 6 270 150 30 2.6 3.2 

AD 111 550 38 x 6 395 150 30 4.3 5.2 

AD 114 700 38 x 6 550 130 50 8.7 9.8 

AD 117 700 50 x 9 550 130 65 9.2 11.6 

AD 119 700 50 x 9 550 130 75 11.7 14.1 

AD 118 700 50 x 9 550 130 96 15.6 18.0 

AD 124 1070 50 x 9 915 130 50 12.3 16.0 

AD 126 1070 50 x 9 915 130 75 20.3 24.0 

AD 128 1070 50 x 9 920 130 104 29.3 33.0 

WELDED HULL ANODE ALALLOY 


S – 2 238 150 75 25 0.3 0.7 

S – 3 300 200 100 20 0.8 1.4 

S – 4 300 200 100 30 1.13 1.73 

S – 4E 300 200 100 40 2.1 2.7 



S – 6 300 150 270 20 2.25 2.95 

S – 8 300 150 270 25 2.8 3.5 

S – 9 300 150 270 30 3.7 4.07 

S – 9E 300 150 270 40 4.3 5.0 

S – 9F 300 150 270 50 5.3 6.0 


TYPE A B C NETT WT GROSS WT 

S – 18 800 75 50 6.8 7.5 




19 




Hull / tAnk 

20 

B 

A 

F 

D 

A 

C 

A 

A 

D 

C 

B 

C 

70 

100 




BOLTED HULL ANODE ALALLOY 


B2 150 75 25 75 0.6 0.7 

B3 200 100 20 110 0.93 1.07 

B4 200 100 30 110 1.31 1.45 

B4E 200 100 40 110 1.66 1.8 

B6 300 150 20 160 245 2.65 

B8 300 150 25 160 2.69 2.89 

B9 300 150 30 160 3.11 3.31 

B9E 300 150 40 160 4.4 4.6 

B9F 300 150 50 160 5.3 5.5 

B9G 300 150 75 160 8.3 8.5 

B12 300 200 40 160 5.8 6.0 

B12E 300 200 65 160 10.5 10.7 

PIT-GUARD TANK ANODE (ALALLOY) 

TYPE A B C NETT WT 

AD 2235T 200 70 76 2.33 

AD 2235/1T 400 70 76 4.7 

AD 2235/2T 356 70 76 4.2 

AD 2237T 395 76 63 4.5 


TYPE A CORE 

DIMS 

(ALALLOY) ALUMINIUM TANK ANODE 

B C D E NETT 

WT 

GROSS 

WT 

AD 110T 1225 13 765 50 40 50 4.1 5.4 

AD 115T 1985 13 1525 50 40 50 8.3 10.3 

AD 156T 765 13 305 75 50 65 3.3 3.8 

AD 155T 1070 13 610 75 50 65 7.1 8.1 

AD 154T 1225 13 765 75 50 65 8.7 10.0 

AD 153T 1475 13 1015 75 50 65 8.7 10.0 

AD 152T 1730 13 1270 75 50 65 14.5 16.3 

AD 151T 1985 13 1525 75 50 65 17.3 19.3 

AD 196T 765 13 305 95 70 90 5.8 6.3 

AD 195T 1060 13 600 95 70 90 12.2 13.2 

AD 194T 1210 13 1005 95 70 90 20.2 21.7 

AD 193T 1465 13 1005 95 70 90 20.2 21.7 

AD 192T 1720 13 1260 95 70 90 25.4 27.2 

AD 191T 1985 13 1525 95 70 90 30.9 32.9 

* Anode lengths given in the table are standard but other lengths can be supplied to order.


industriAl & OffiCiAl 

THK 

MILD STEEL 

FLAT BAR 

CORE 

Code: Stand-off flat bar. 

Note: Non-standard anodes of other weights/ 

dimension or special cores are also available 

on request 

C 

Wc 

L 

Lc 

A 

Fc 

Lc 

SCH 80 PIPE Hc T 

Code: Stand-off pipe welded to tee bar. 

L 

A 

B 



on request 

SCH 80 PIPE 

B 

Code: Stand-off straight pipe. 

T 

300MM 



on request 

300MM 

C 

B 

L 

Lc 

Code: Stand-off bent pipe. 

B 

A 

L 

C 

A 

300MM 



on request 

T 

T 

SCH 80 PIPE 

ANODE TYPE ALLOY 

WT. (KG) 

GROSS 

WT. (KG) 

L 

(MM) 

A 

(MM) 

B 

(MM) 

T 

(MM) 

C 

(MM) 

SCH 80 PIPE 

DIA. (INS) 

LcxHcxFcxThk 

(MM) 

MG 1330 PT 120 133 2000 148 173 141 1600 2 1800x50x50x6 

MG 1600 PT 147 160 2120 148 176 160 1600 2 1800x50x50x6 

MG 1620 PT 147 162 2440 148 173 141 2073 2 2200x50x50x6 

MG 2150 PT 200 215 2440 148 181 186 1850 2 2200x50x50x6 

MG 2940 PT 260 294 2440 148 181 186 1850 2 2200x80x80x9 

MG 3680 PT 330 368 2440 252 290 188 1850 4 2200x80x80x9 

MG 3880 PT 350 388 2440 252 293 198 1850 4 2200x80x80x9 


WT. (KG) 

GROSS 

WT. (KG) 

L 

(MM) 

A 

(MM) 

B 

(MM) 

T 

(MM) 

C 

(MM) 

SCH 80 PIPE 

DIA. (INS) 

LC 

(MM) 

MG 1380 SP 10 138 2000 148 175 152 1600 2 1800 

MG 1650 SP 147 165 2120 148 178 171 1600 2 1800 

MG 1680 SP 147 168 2440 148 175 153 2073 2 2200 

MG 2210 SP 200 221 2440 148 223 155 1850 2 2200 

MG 3040 SP 260 304 2440 198 232 209 1850 2 2200 

MG 3940 SP 330 394 2400 252 296 216 1800 4 2200 

MG 4140 SP 350 414 2440 252 299 226 1850 4 2200 


WT. (KG) 

GROSS 

WT. (KG) 

L 

(MM) 

A 

(MM) 

B 

(MM) 

T 

(MM) 

C 

(MM) 

SCH 80 PIPE 

DIA. (INS) 

MG 1410 BP 120 141 2000 148 175 153 2200 2 

MG 1410 BP 147 169 2120 148 179 173 2320 2 

MG 1720 BP 147 172 2440 148 176 154 2840 2 

MG 2250 BP 200 225 2440 148 224 156 2840 2 

MG 3110BP 260 311 2440 198 232 211 2840 3 

MG 4070 BP 330 407 2400 252 297 217 3040 4 

MG 4270 BP 350 427 2440 252 299 227 3040 4 


WT. (KG) 

GROSS 

WT. (KG) 

L 

(MM) 

A 

(MM) 

B 

(MM) 

T 

(MM) 

C 

(MM) 

SCH 80 PIPE 

DIA. (INS) 

MG A400 DC 34.5 40 1250 89 115 103 135 1600x50x8 

MG A460 DC 40 46 1500 89 115 102 135 2000x50x8 

MG A660 DC 60 66 1500 126 145 112 135 2000x50x8 

MG A680 DC 63.5 68 1020 148 174 144 135 1400x50x8 

MG A890 DC 80 87 1500 126 151 146 135 2000x50x9 

MG A1170 DC 110 117 1500 148 178 167 155 2000x50x9 

MG A1540 DC 140 154 1500 198 225 165 155 2000x75x12 

MG A1810 DC 160 181 2440 148 176 154 155 3000x75x12 

MG A2210 DC 200 221 2440 148 182 187 155 3000x75x12 

21 



AmP-PAk Anodes 

mAgnesium 

liP internAtiOnAl Pte ltd (m.g. duff) magnesium Hull Anodes 

Potential – 1.5 volts Ag/ AGCI Capacity (ampere hours) 1230 per KG minimum 

Anode 

Type 

Product 

Amp-Pak “H1” magnesium anodes are produced 

at our modern facilities, making use of the latest 

technology as well as time-proven methods. Most 

anodes are cast in cylindrical shape which has proven 

to produced the finest results over a wide variety of 

applications. Each anode is cast of closely controlled 

alloys and exacting weights. Quality control is a 

critical factor, built into our manufacturing process. 

reputation 

Born with commitment IMCO, formerly International 

Metal Co., opened its plant in 1961 in Sapulpa, OK. 

Since that time we’ve grown and expanded, building 

the business on a unique process of reclaiming 

magnesium for production of anodes and secondary 

ingots. Within 30 years, we’ve earned a reputation for 

quality and dependability that speaks for itself. 

Backfill Material 

75% Gypsum, 20% Bentonite, 5% Sodium Sul. 

22 

CU AI SI FE MN NI ZN PB MG 

0.08 5.3 - 6.7 0.3 

maximum 

Anode* 

Lenght 

mm 

Anode* 

Width 

mm 

0.005 

maximum 

Anode* 

Depth 

mm 

Anode* 

Weight (Kg) 

net/gross 

MD76 765 50 40 50 

MD77 1525 50 40 50 

MD78 305 75 50 65 

MD79 610 75 50 65 

MD73 765 75 50 65 

ANODE 

WEIGHT 

POUNDS 

HIGH CURRENT MAGNESIUM ANODES SPECIFICATIOMS 

DIMENSIONS SHOWN IN INCHES 

BARE AMP-PAK 

LENGHT DIAMETER SHAPE LENGHT DIAMETER 

AMP-PAK 

TOTAL 

WEIGHT 

APPROX. 

5 13 2 Round 19 5 20 

9 20 2 Square 25 5 30 

17 39 3 Square 43 5 55 

ANODE 

WEIGHT 

POUNDS 

0.25 

maximum 

Anode 

Type 

A full range of stud assemblies and backing sheets to suit these anodes are available from stock. 

* All weights and dimensions are nominal. 

0.003 

maximum 

2.5 - 3.5 0.03 remainder 

Anode* 

Lenght 

mm 

HIGH CURRENT MAGNESIUM ANODES SPECIFICATIOMS 

DIMENSIONS SHOWN IN INCHES 

Anode* 

Width 

mm 

BARE AMP-PAK 

Anode* 

Depth 

mm 

LENGHT DIAMETER SHAPE LENGHT DIAMETER 

Anode* 

Weight (Kg) 

net/gross 

MD72 765 50 40 50 

MD32B 1525 50 40 50 

MD33B 305 75 50 65 

MD33 610 75 50 65 

PBA 765 75 50 65 

AMP-PAK 

TOTAL 

WEIGHT 

APPROX. 

5 13 2 Round 19 5 20 

9 20 2 Square 25 5 30 

17 39 3 Square 43 5 55

electrolytic descaling of 

CArgO / BAllAst tAnks 

MG-strips to be connected to clamp or tackweld 

SECTION 9.5 mm x 19 mm 

CORE 3.2 mm diameter 

MG WT PER METER 0.37 kg 

TYPIYAL CURRENT 

- IN SEAWATER 

- IN SOIL 

(5000 OHMS / CM) 

- IN WATER 

(15,000 OHMS / CM) 

2.4 amps / meter 

10 milliamps / metre 

3 milliamps / metre 

Characteristics 

• MG-strips, correctly dimensioned remove rush and scale in tanks during 

the ballast voyage. 

• The strips are to be fitted according to drawings and instructions before 

the tanks are filled with clean sea water. 

• The process requires from 8-14 days depending on conductivity of the 

sea water, magnitude of scale and other conditions. 

extruded magnesium 

ribbon Anodes 

Rust and various types of scale can be easily removed by means of 

Magnesium Ribbon anodes, a systems for descaling of cargo/ballast tanks. 

Before paintings or coating, the tanks should primarily be descaled with 

strips. This should also be done if the cargo, which is to be carried requires 

particularly clean tanks. Electrolytic descaling by Magnesium Ribbon anode 

may be done during the ship’s ballast voyage. No supervision is necessary 

during the descaling process. Several cargo tanks may be simultaneously. 

What is electrolytic descaling? 

The process itself is very simple. Firstly, the magnesium strips are mounted 

as prescribed for the tank. Next, the tank(s) containing strips should be filled 

with clean sea water. Magnesium and steel have different electrochemical 

potential and the sea water between them acts as a conductor. A powerful 

electric current from the magnesium strips is guided through the sea 

water to the tank surface. 

To achieve special heavy “current flow”, the anodes are designed as long 

strips of a special active magnesium alloy. The electric current causes a 

breakdown of the oxide (i.e scale and rust), which thereby looses its 

adhesion to the steel and falls off. Depending on the character of the 

scale, the temperature, and the current density, the descaling process 

maytake from 8 to 14 days. This period may be shortened by increasing 

the temperature of the water by applying steam on the heating coils in the 

tank(s). The conductivity and thereby the current increase with increasing 

temperature. 

23 



typical methods of Attaching Anodes for 

Hull And tAnk APPliCAtiOns 

24 

EXTERNAL 

External Hull applications. 

INTERNAL 

Z TYPE crank weld attachment for internal anodes. 


SINGLE & DOUBLE CRANKWELD attachment for 

internal anodes. Tank application. 

M TYPE clamp attachment for internal anodes. 

Tank Application. 

E TYPE stud attachment for internal anodes. 


U BOLT attachment for internal anodes. 


STAND-OFF TYPE attachment for internal anodes. 


CLAMP TYPE for pitting prevention. Tank bottom 

application.

Anti Fouling system & impressed 

Current CAthodiC proteCtion (iCCp) 

Anti Fouling system & impressed Current CAthodiC proteCtion (iCCp)

Anti Fouling system & impressed Current CAthodiC proteCtion (iCCp) 

Fouling system 

Anti-Fouling 

lower Fuel usage 

26 

easy installation 

The environmental factor. The mounting concern regarding the use of chemicals in the marine 

environment has led many operators to seek alternatives to the traditional chlorine injection methods 

of controlling marine growth. Our marine completely non-toxic, it provides an extremely effective 

deterrent, without the harmful consequences associated with the use of bulk chemicals. 

Each installation is purpose designed for its particular application to simplify installation and ensure 

the highest levels of performance. The size of the system is calculated to accurately provide the 

optimum levels of dosage based on the system flow rates and to achieve the required anode design 

life. Anodes are supplied with flange mounting are to facilitate installation from within the ship. In 

circumstances where systems need to be installed prior to scheduled dry docking, there is the option 

of mounting the anodes in the seawater strainers. This also simplifies replacement when renewal 

becomes necessary. Due to the simplicity of the system, it can be installed and commissioned by 

ship’s crew in 90% of cases, thus providing saving on specialist engineers. 

saving pipework renewal Cost 

Bio-fouling in heat exchangers can represent a major threat to cost effective 

operation. Partial blockages can cause engines to run at abnormally high 

temperatures leading to an appreciable increase in fuel usage. Our system will 

eliminate this drain on profitability. 

great Vessel safety 

The system has an important role in safeguarding the operational capability 

of ships. Severe blockages in pipework systems and valves can jeopardise 

the manoeuvrability and safely of vessels with serious consequences. This 

equipment is also widely specified for the protection of fire fighting pumps, 

ensuring that they remain free from fouling and corrosion in the ‘stand by’ 

condition. 

The cost of our anti-fouling system can be quickly recovered through reductions in pipework 

maintenance. An important feature of the system is the ability to continuously renew protective 

oxide films on the surfaces of the materials throughout the seawater cooling system. This includes 

heat exchanger plates, condenser tubes, valve faces, pump impellers which are subject to corrosive 

action leading to failure. It has been proven that shipowners who have employed this form of system 

have significantly reduced failures of this type and gained increases in the longevity of equipment by 

40-50% in comparison with ship without protection. 

To Heat 

Exchanged, 

Oil Coolers, 

Evaporators, 

Fire Pumps and 

Ancillary Systems 

Main Sea Valve 

Seawater 

Cooling Line 

Cathelco 

Electrodes 

Seachest 

Power in 

Inlet Grid

proteCtion systems 

impressed Current CAthodiC 

impressed Current 

effective suppressive of corrosion 

reliable, consistent performance 

meets major international standards 

Full design and technical advisory service 

A protective current is impressed in the structure through semi-inert anodes. 

The LIP INTERNATIONAL PTE LTD (M.G. Duff ) system converts the ship’s A.C. 

supply into a controlled low voltaged D.C. output, which is then delivered onto 

the metal surface by long life anodes attached to, but insulated from the hull 

structure. Various factors affect the amount of current required, therefore to 

ensure the correct level of protection is accurately controlled it is necessary to 

measure the potential of the steel against known and reliable reference cell. 

This potential is monitored by reference electrodes mounted on the underwater 

hull surface. The number of electrodes and their location id carefully selected 

in conjunction with the anodes configuration and hull geometry. Solid state 

circuitry within an automatic control unit compares the reference potential 

against a desired and preset optimum. Any difference between these will 

induce a resultant error signal, which is electronically conditioned to provide 

suitable regulation of the D.C. power supply to the anodes. 

This ability to automatically respond and control the current output ensures 

that the correct level of protection is maintained, within designed limits, at all 

times regardless of environmental variations, such as speed, vessel motion, 

temperature, salinity and coating condition. 

LIP INTERNATIONAL PTE LTD (M.G. Duff ) is engaged in all aspects of design, manufacture and supply 

of Impressed Current Cathodic Protection Systems and has accumulated more than three decades of 

technical expertise and experience. 

Existing system continue to provide reliable and trouble free service throughout the world in an 

extensive range of applications, particularly in the marine industry where they are providing external 

hull protection on a wide range of commercial and military vessels from Bulk Tankers to High Speed 

Strike Craft and Patrol Boats. 

By today’s technical standards the company enjoys a leading position internationally and has worked 

in close co-operate with Naval Defence authorities and the major Classification Societies to ensure 

equipment standards which fully satisfy their requirements in all respects. 

SEA 

ELECTROLyTED 

ANODE 

REFERENCE 

ELECTRODE 

CATHODE 

STRuCTuRED 

CONTROL 

TRANSFORMER 

RECTIFIER 

Schematic Layout of Impressed Current 

Cathodic Protection Components 

PRESET 

LEVEL 

A.C INPuT 

27 

Anti Fouling system & impressed Current CAthodiC proteCtion (iCCp)

Anti Fouling system & impressed Current CAthodiC proteCtion (iCCp) 

proteCtion systems 

impressed Current CAthodiC 

28 

2mm 

240 

170 60 

22 

4 x Ø23 

4 OFF ANODE REF: WVR27KB 

4 OFF ANODE REF: WVR28KB 

8 

NO. DESCRIPTION QTy REMARK NO. DESCRIPTION QTy REMARK 

1 8 X Ø23 FLAGE JIS10K-150A, M.S 1 MAKER 8 M6 BRASS SET SCREW 1 MAKER 

2 MATING FLANGE JIS10K-150A, 

M.S 

280 

160 

4 

5 

6 

7 

9 

10 

1 yARD 9 MG ANODE STuD 1 MAKER 

3 STRAINGER TOP PLATE 1 yARD 10 FuLL & HALF BRASS NuTS 1 MAKER 

4 6mmSQ CABLE TAIL 3M MAKER 11 PROTECTION PLATE 1 MAKER 

5 MILD STEEL PLATED GLAND 1 MAKER 12 MOuNTING SLEEVE 1 MAKER 

6 MILD STEEL LID 1 MAKER 13 HEAT SHRINK SLEEVE 1 MAKER 

7 ‘O’ RING 1 MAKER 

12 

150 

13 

1 

2 

3 

11 

FINISH 

Client to paint sleeve after welding, to same 

specifications as strainer after welding. 

Anodes to be free from paint and grease.

GENERAL HARDWARE, 

SHIP’S SPARE & STORE SUPPLIES 

GENERAL HARDWARE, SHIP’S SPARE & STORE SUPPLIES

GENERAL HARDWARE, SHIP’S SPARE & STORE SUPPLIES 

GENERAL HARDWARE 

VALVES 

30 

V-15 

V-8 

V-20 

V-1 

V-9 

V-21 

V-6 

V-16 

V-2 

V-10 

V-17 

V-22 

V-7 

V-11 

V-3 

V-12 

V-18 

V-23 

V-4 

V-14 

V-5 

V-13 

V-19 

V-24


HAND TOOLS 

Marine Jack and Roller 

Toe Jack 

Mini Jack 

Forklift Jack 

Adjustable Wrenches 

H-15 

H-16 

H-5 

Speed Roller 

Bottle Jack 

H-4 

H-1 

H-3 

H-6 

Accessories Set Hand Tools Set 1 

H-2 

Service Jack 

Block & Trolley 

Plain Trolley 

Geared Trolley 

1 1/2 Ton 

Chain Block 

Magnetic Hand Tools 

1 Ton 

Level Block 

Hand Tools Set 2 Comprehensive range of Hand Tools 

H-19 

H-17 

H-18 

H-20 

Grinder 

Chisel 

H-10 

H-12 

H-14 

H-8 

H-7 

Magnetic Equipments 

H-11 

H-13 

H-9 

Magnetic Bases Permanent Magnet 

31 




WIRE ROPES & CHAINS 

Steel Wire Ropes 

32 

Wire Rope Slings and Cable Laid Slings 

Steel Wire Ropes: Crane and Engineering Purpose 

NoMiNAL WEiGHT 

diAMETER 100M MiNiMuM BREAkiNG LoAd 

tensile grade 

1770N = 180 kgf/mm 2 1960N = 200 kgf/mm 2 

mm kg kN khf kN kgf 

8 25.50 40.30 4110 44.70 4560 

9 32.20 51.00 5200 56.50 5760 

10 39.80 63.00 6420 69.80 7120 

11 48.20 76.20 7770 84.40 8610 

12 57.30 90.70 9250 100.00 10200 

13 67.30 106.00 10800 118.00 12000 

14 78.00 124.00 12600 137.00 14000 

16 102.00 161.00 16400 179.00 18300 

18 129.00 204.00 20800 226.00 23000 

19 144.00 227.00 23100 252.00 25700 

20 159.00 252.00 25700 279.00 28500 

22 193.00 305.00 31100 338.00 34500 

24 229.00 363.00 37000 402.00 41000 

26 269.00 426.00 43400 472.00 48100 

28 312.00 494.00 50400 547.00 55800 

30 358.00 567.00 57800 628.00 64000 

32 408.00 645.00 65800 715.00 72900 

34 460.00 728.00 74200 807.00 82300 

36 516.00 817.00 83300 904.00 92200 

38 575.00 910.00 92800 1010.00 103000 

40 637.00 1010.00 103000 1120.00 114000 

42 702.00 1110.00 113000 1230.00 125000 

44 771.00 1220.00 124000 1350.00 138000 

46 842.00 1330.00 136000 1480.00 151000 

48 917.00 1450.00 148000 1610.00 164000 

50 995.00 1580.00 161000 1740.00 177000 

52 1080.00 1700.00 173000 1890.00 193000 

54 1160.00 1840.00 188000 2030.00 207000 

56 1250.00 1980.00 202000 2190.00 223000 

58 1340.00 2120.00 216000 2350.00 240000 

60 1430.00 2270.00 231000 2510.00 256000 

64 1630.00 2580.00 263000 2860.00 292000 

68 1840.00 2910.00 297000 3230.00 329000 

72 2060.00 3270.00 333000 3620.00 369000


STEEL MATERIALS 

MiLd STEEL CHECkEREd PLATE 

Steel checkered plates are available in 

either the direction-free riser pattern or 

the straight striped pattern. 

Featuring excellent skid resistance and 

relatively low weight per unit area, these 

plates are economical to use in flooring 

and others structural applications. 

SquARE HoLLoW SECTioNS 

Hollow Sections are rigid steel structures 

which have a high strength to weigh 

ratio to used extensively in building 

structures including stairways railings 

and overhead bridge constructions. 

2 standard cross section shapes: 

Square Hollow Sections / Rectangular 

Hollow Sections 

uNiVERSAL BEAMS 

Beams are the backbone of the 

construction industry. Boasting 

torsional rigidity and superior omni 

directional strength. Beams allow for 

awe-inspiring skyscrapers and event 

avant-garde modern building designs. 

Beams come in several measurements, 

both in imperial and metric forms. 

FLAT BARS 

Flat Bars may be considered the most 

basic of steel structures, ranging from a 

wide variety of dimensions. 

its applications range from construction 

to machinery fabrication. 

RouNd BARS 

Round Bars fulfill an intrinsic strength, 

which stems form its circular cross 

section, offering universal applications 

where omni directional strength 

is of premium, especially in the 

reinforcements of concrete. 

2 varieties of identical measurement: 

Brightshaft Round Bars / Mild Steel 

Round Bars 

uNEquAL ANGLE BARS 

Angle Bars are one of the most 

commonly used steel structures in the 

constructions industry. The basic shape 

of the Angle Bar lends it many practical 

uses. 

2 types of Angle Bars: 

Equal Angle Bars / Unequal Angle Bars 

EquAL ANGLE BARS 

Angle Bars are one of the most commonly 

used steel structures in the constructions 

industry. The basic shape of the Angle 

Bar lends it many practical uses. 

2 types of Angle Bars: 

Equal Angle Bars / Unequal Angle Bars 

RECTANGuLAR HoLLoW SECTioNS 

Hollow Sections are rigid steel structures 

which have a high strength to weigh 

ratio to used extensively in building 

structures including stairways railings 

and overhead bridge constructions. 

2 standard cross section shapes: 

Square Hollow Sections 

Rectangular Hollow Sections 

u - CHANNELS 

Mild Steel Channels are use mainly in 

heavy industries. 

MS Channels are usually applied in the 

automotive industry as well as heavy 

machinery industries. 

3 types of mild steel channel: 

Plain Channels / Lipped Channels 

U/C Channels 

CARBoN STEEL PiPES 

The advent of electrically welded steel 

pipes, modern science and technology, 

strong and extremely durable steel pipes 

are available for everyday applications 

4 class of Welded Steel Pipes: 

Class Light / Class Medium/ Class Heavy 

Carbon Steel Pipes 

MiLd STEEL PLATES 

Steel plates come in various material 

composition to suit specialized uses. 

Weight and dimensions of Ship, Boiler 

and MS plates are uniform to facilitate 

ordering. 

Ship Plates / Boiler Plates / Mild Steel 

Plates 

SquARE BARS 

Square Bars fulfill a large number of 

uses. Bacause of its intrinsic strength, 

which stems form its flat section, 

offering universal applications which 

are available for everyday applications. 

33 



SHIP’S SPARE 

GALVANIzED SERRATED GRATING 

34 

depth 

Pitch of Cross Bar 4” 

1 3/16” 

1 3/16” 

Pitch of Bearing Bar 

Pitch of serrated bearing bars. 

Pitch means the distance between the centres of two 

serrated bearing bars. The pitch is 1 3/16”. 

Pitch of twisted cross bars. 

Pitch means the distance between the centres of two 

twisted cross bars. 

The pitch is 4”. 

The thickness of serrated bearing bar is 1/8” or 3/16”. 

Thickness 

The depth of serrated bearing bar is 1”, 1 1/4”, 1 1/2”, 1 

3/4” or 2”. 

Cross Bar 

dETAiL oF SERRATioN 

Bearing Bar 

1/2” 1/8” 

1/8”

SHIP’S SPARE 

PIPES & FITTINGS 

FoRGEd FLANGES 

diMENSioN STANdARd 

A.N.S.i B16.5 / BS 3293 / B16.47 - “A” / “B”, 

APi - 6A (Type 6B & 6BX) 

WALL THiCkNESS 

Sch. 20, 30, 40, 80, 120, 160, STd, XS, XXS 

and Solid Bore 

TYPE 

Welding Neck, Blind, Slip on, Threaded 

Socket Weld, Lap Joint, Hanger, 

Reducing Cover, Long Welding Neck, 

Swivel Ring Spectacle Blind, Spade 

Blind, Spacer Ring 


A.N.S.i B16.11 / Threading To A.N.S.i. B2.1 

MATERiAL GRAdES AVAiLABLE 

ASME/ASTM SA/A 105N, SA/A 350 LF2 

ASME/ASTM SA/A 182 F304/L, SA/A 182 F316/L 

SToCk AVAiLBiLiTY 

300#NPT & SW 1/4” thru 4”, 6000#NPT & SW 1/2” 

thru 4”, 9000#SW 1/2” thru 2” 


Elbow 45 & 90 degree - Street Elbow - Coupling 

Full, Half & Reducing - Tee Equal & Reducing - 

union - union Male X Female - Cap - Boss - Plug 


ASME/ASTM SA/A 105N, SA/A 350 LF2 

ASME/ASTM SA/A 182 F304/L, SA/A 

182 F316/L 


150# - 1/2” thru 36”, 300# - 1/2” thru 63”, 

600# - 1/2” thru 30”, 900# - 3” thru 24”, 

1500# - 1/2” thru 24”, 2500# - 1/2” thru 

12”, 3000# to 10,000# - 31/8” thru 71/16” 

(for APi Flanges) Facing Available in RF 

(Raised Face) & RTJ (Ring-Type Joint) 

BuTT-WELd FiTTiNG 

Hex Head, Round Head & Square Head - Hex 

Nipple & Reducing Nipple - Hex Bushing - Cross - 

Reducing insert - Bull Plug. 

Plug and Bushing are not identified by Pressure Class. 

They may be used for rating up through Pressure Class 

6000 

Sage Nipples - Concentric & Eccentric as per 

BS. 3799 and Manufacturers Standard. 1/4” thru 

4” (PBE/TBE) Sch 80/160/XXS, 1/4” thru 4” Pipe 

Nipples Sealess as per A.N.S.i B36.10/ASTM A106 

Gr.B (original from Mills) (TBE/ToE/PoE) Sch 

80/160/XXS 


A.N.S.i B16.9 / B16.28 


Sch. 10, 20, 30, 40, 80, 100, 120, 160, 

STd, XS and XXS 


ASME/ASTM SA/A 234 WPB, SA/A 

420 WPL6 ASME/ASTM SA/A 403 

WP304/L, SA/A 403 WP316/L 

FoRGEd FiTTiNG SEAMLESS LiNE PiPES 


1/2” thru 42” Elbows 45 & 90 degree 

Long & Short Radius 

1/2” thru 42” Teee Equal & Reducing 

1/2 thru 8” 180 degree Return Bends 

Long and Short Radius 

1/2” thru 36” Reducers Concentric and 

Eccentric 

1/2” thru 42” Caps 


A.N.S.i/ASME 36.10 


Sch. 20, 30, 40, 80, 100, 120, 160, STd, XS, 

XXS. 


APi 5L Grade B, ASME/ASTM SA/A 53 

Grade B, ASME/ASTM SA/A 106 Grade 

B, APi 5L Grade X42 


Sizes: 1/2” thru 24” 

35 



SHIP’S SPARE & STORES 

DECk EqUIPMENTS 

36 

WiNCHES 

BLoCkS 

Towing Hook 

Hand Winch 

Anchor Fairleaders 

EC Type Power 

Capstan 

Hand Windings 

Portable Winch 

Pelican Hook 

SHACkLES dECk EquiPMENT 

C2140 

C210 

Alloy Steel 

Shackles 

Fairlead 

Mandal 

G209 

G2130 

Roller Type 

Tongsberg 

Mooring Link 

G2160 

G2150 

Stainless Steel 

Shackles 

Anchor Type 

Carver Type 

Fair Leader 

Bollard Bitt 

open Roller 

universal 

Fairleader 

Panama 

Chock 

Slip-on 

Flanges 

double Roller 

Fairleader 

Eye Plate 

Mooring Pipe 

Close Chock 

oil-Field Type Single & Snatch Toggle Type Slusher Type Roller Bearing Steel Snatch Galvd Pulley Wooden Type Steel Sheaves 

Type 

Type 

Type 

Type 

Single Crane & 

Hook Type 

double 

Sheave Type 

Pulling & 

Lifting Winch 

Hay Fork 

Pulleys 

universal Cargo 

Type 

Single Sheaves 

Lashing Type 

overhaul Type 

Tackle Pulley Gin Hooks 

Lap-Joint 

Flanges



SWiVELS 

Eye-Hook Jaw-Jaw 

Eye-Eye Jaw-End Regular 

CHAiN BLoCkS & LoAd BiNdERS 

Standard Load 

Binders 

TuRNBuCkLES 

Hook & Eye, 

Galvanized 

WiRE RoPE FiTTiNGS 

Wire Rope 

Clips Crosby 

L-140 Standard 

Ratchet Binder 

Head Binder 

with Claw Hook Hand Chain Block Hand Lever Hoist 

C.i. Wire Rope Clips 

HookS 

CHAiN & FiTTiNG PiPE FiTTiNGS 

Three & Four 

Legged Slings 

Missing Link 

Hook to Hook, 

Heavy duty 

Fist Grip Clips 

Eye & Jaw 

Bottlescrew 

High Test & Alloy 

Chain Proof Coil Chain 

Spin Link 

open 

Spelter Socket 

double 

Clevis Links 

Lashing 

Turn Buckle 

Weldless 

Pear Ring 

Weldness Alloy 

Master Link 

Rigging 

Screw 

Closed 

Spelter Socket 

Master Link 

Assembly 

Connecting 

Link 

union 

Screw 

Weldness 

Round Link 

Tail Chain 

S-315 

A-330 

S-319 

Anchor 

Line Hook 

G-3315 

Welding 

Neck Flanges 

Elbow 

S-322 

A-323 

Swivel Cargo 

Hooks 

Sorting 

Hook 

Barrel Hook 

Con-Reducer 

S-320 

Safety Hook 

Type Bk 

Twisted 

Hook 

A350 

Chain Clutch 

Sorf 

Flanges 

M/F 

Flanges 

37 





38 

ANCHoRS CHAiNS & FiTTiNGS RoPES 

Stockless Anchor danforth Anchor 

CqR Anchor 

Studlink Chain 

Swivel Pieces 

Stock Anchor 

Grapnel Anchor kenter Shackle detachable Anchor 

Connecting Link 

Manila Ropes 

Polypropylene & Nylon Ropes 

CATHodiC PRoduCTioN 

Zinc Anode 

Bolted Type 

Welded Type 

Sanitation 

Engine Water intake 

Heavy-duty Water 

Comprehensive range of Hand Tools Comprehensive range of Hoses 

Wire Ropes 

Shaft Anode Zinc Rod 

Bolted Type 

intake/discharge 

Rubber Sanitation 

Flexible Exhaust

STORE SUPPLIES 

SAFETy EqUIPMENTS 

Spectacles 

Gloves 

Helmets 

Night Vison Binocular 

dry Power 

Extinguisher 

Fire Extinguisher 

Laser Binocular 

Ear Plugs 

Portable Fire Extinguisher 

dry Powder Fire Extinguisher 

Clinometer Radar Reflector 

Binnacle Mount Compass 

Barometer 

Goggles 

Faceshields 

S-1 S-2 S-3 

S-4 

Water 

Extinguisher 

dry Power 

Extinguisher 

Marine Venturi 

Barograph 

Binoculars 

S-5 

Searchlight 

Wheel Assembly 

Marine Light 

Navigation / 

Emergency Light 

Safety Signs 

Hemilight 

Searchlight 

Lever 

Solar Marine Light 

Vest Light 

Work Vest Light 

inflatable Lifejacket 

Ear Puffs 

Safety Whistle 

Signalling Light 

Self Contained 

Breathing Apparatus 

Emergency Water 

Foam Lifejacket 

Emergency 

Food-Ration 

Water Activator 

Hydrostatic 

Release 

immersion Suit 

39 



STORE SUPPLIES 

PROVISION AND BONDED STORES 

Provision Products 

Wines – DUTY FREE Product 

Frangrants – DUTY FREE Product 

40 

Liquors – DUTY FREE Product 

Frozen Meats and Products Seafood and dairy Product 

Beverages and Bonded items – DUTY FREE Product Miscellaneous Cleaning Agents 

Brews – DUTY FREE Product Tobacco – DUTY FREE Product 

Mineral Water Soft drink Bottles Packet Food Product 

Can Food Product

Your Local Agent Representative 


Blk 1034, Eunos Ave 5, #01-54, Singapore 409743 

Tel: (65) 6747 0005 Fax: (65) 6747 0006 

E-mail: mgmarine@singnet.com.sg 

www.mgmarine.com.sg 

www.lipintl.com.sg 

Design, Photography & Prints by Singapore Studio Pte Ltd | Email: andyap@singapore-studio.com

liP internAtiOnAl Pte ltd (mg duff) magnesium Hull Anodes

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