4 General Technical Specification of Bhilai Steel Plant, SAIL ...
4 General Technical Specification of Bhilai Steel Plant, SAIL ...
4 General Technical Specification of Bhilai Steel Plant, SAIL ...
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PIPES<br />
© 2007 MECON Limited<br />
All rights reserved<br />
<strong>General</strong> <strong>Technical</strong> <strong>Specification</strong><br />
Pipe dimension shall be in accordance with ANSI B36.10 : IS:1239, IS:3589 for carbon<br />
steel pipe and to B36.10/B36.19 for stainless steel pipe.<br />
Pipe made by acid Bessemer process shall not be acceptable. Pipes shall be made by<br />
open hearth, electric furnace or basic oxygen process.<br />
All pipe threads shall conform to ANSI B1.20.1 except where otherwise noted.<br />
FLANGES<br />
Flanges shall be in accordance with following codes except where otherwise noted.<br />
DN 15 to DN 600 (150 # - 600#) ANSI/ANSI B16.5 / IS : 6392<br />
Above DN 600 API 605 / ANSI B16.47 / MSS-SP-44/IS:6392/DIN etc.<br />
Flanges to MSS-SP-44 or any other std. like DIN, BS etc. may be specified to be made<br />
with equipment or valve flanges with corresponding bolting.<br />
Finish <strong>of</strong> steel flange faces shall conform to MSS-SP-6/ ASME B46.1/ASME B16.5. The<br />
interpretation shall be as follows :<br />
Serrated : 250 – 500 Mu in AARH<br />
Smooth (125 AARH) : 125 – 250 Mu in AARH<br />
For RTJ groves (32 AARH) : 32 – 250 Mu in AARH<br />
Bore <strong>of</strong> WN flanges shall match the ID <strong>of</strong> the attached pipe Bore <strong>of</strong> slip on flanges shall<br />
suit the pipe OD and its thickness.<br />
Dimensions <strong>of</strong> welded steel flanges for low pressure gas ( Pressure upto 1 kg/cm 2 ) is<br />
indicated in Table 06.01<br />
FITTINGS<br />
Forged steel socket welded and threaded fittings shall be in accordance with ANSI B<br />
16.11 unless otherwise noted.<br />
Butt welded fittings shall be in accordance with ANSI B16.9 unless otherwise noted.<br />
Fabricated (site/factory) fittings shall conform to IPSS-06-020-95 unless otherwise<br />
specified. Fittings thickness and tolerance shall match pipe thickness and tolerance.<br />
Mitres and reducers fabricated from pipe may be used if specified in PMS. Same shall<br />
conform to IPSS:1-06-020-95. In no case, thickness <strong>of</strong> mitres and material shall be<br />
inferior to parent pipe.<br />
GASKETS<br />
Non metallic gasket shall conform to IS:2712.<br />
Spiral wound gaskets (SPR, WND) shall conform to API 601/B16.20.<br />
Ring type and spiral wound gasket shall be self aligning type.<br />
Gases & Liquid Fluids<br />
Page 28 <strong>of</strong> 51<br />
GS-02
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