GAIL (India) Limited

11b) The Contractor should furnish necessary documents and proof of payments made for the procurement ofmaterials bearing Standard Mark (ISI).3. Due to non-availability of materials bearing ISI mark as detailed in para-2 above, the materials as per the list ofapproved makes of materials shall be used in the work and the Contractor can use any of makes given in theattached list.4. In case it is established that Standard material (bearing ISI mark) as well as the materials indicated in the list (asmentioned in the above para) are not available in the market, then approved equivalent materials may be used inthe work subject to approval from the consultant and Engineer-in-Charge.5. For materials bearing "Standard Mark (ISI)" ordinarily no testing is to be done However, in case of doubt or witha view to check the quality of materials, Engineer-in-Charge may send samples for random testing.6. For use of materials other than materials bearing "Standard Mark (ISI)" Mandatory tests shall be conducted at thefrequency specified in the contract. In case frequency of testing is not stipulated in the contract then standardspecification (CPWD, ISI etc.) may be considered for frequency at which materials are to be tested.7. Before bulk purchase of quantities of materials, it is the responsibility of the Contractor to get the samples ofmaterials approved from consultant and Engineer-in-Charge.5.0 SPECIFICATION OF MATERIALSHARDWARE & METALSThe hardware throughout shall be of approved manufacture and supply, well made and equal in every respect to thesamples to be deposited with the Consultants The Contractor may be required to produce and provide samples from manydifferent sources before the Consultants take decision and he should allow in his rates for doing so.Fittings generally shall have satin chrome or anodized finishing unless otherwise specified and shall be suitable for theirintended purpose as per Consultants approval.Screws are to match the finish of the articles to be fixed, and to be round or flat-headed or counter sunk as required.The Contractor should cover up and protect the brass and bronze surface with thick grease or other suitable protectivematerial, renew as necessary and subsequently clean off and clear away on completion.Aluminium and stainless steel shall be of approved manufacture and suitable for its particular application. Generally thesurface of aluminum shall have an anodized finish, and both shall comply with the samples approved by the ConsultantsAll stainless steel sheets shall be 304 S. S. Japan or equivalent with gauges as specified but not less than 16 GL.All steel, brass bronze aluminium and stainless steel articles shall be subject to a reasonable test for strength, if so requiredby the Consultants at the Contractor's expense.All brazing and welds are to be executed in a clean and smooth manner, rubbed down and left in the flattest and tidiestway, particularly where exposed.Chromium plating shall be in accordance with BS 1224 Standard or as per approved specifications for normal outdoorconditions and shall be on a base material of copper or brass.GLAZIERAll glass to be of approved manufacture, complying with IS 3548 1966 as per approved quality and sample to be of theselective qualities specified and free from bubbles, smoke, wanes, air holes and other defects.Polished plate glass shall be "glazing glass “(G.G.) quality that for mirrors shall be” silvering quality (S.G.), conformingto IS 3438 - 1965 or as per approved sample and quality.The compound for glazing to metal is to be special non-hardening compound manufactured for the purpose and of a brandand quality approved by the consultants.While cutting glass, proper allowance to be made for expansion Each Square of glazing to be in one whole sheet. Oncompletion of work, clean all glass inside and out, replace all cracked scratched and broken panes and leave in goodcondition.