Supply A335P9 elbow 15CRMOG welded elbow factory direct Japanese standard JIS B2311 Standard No. Description Universal steel pipe fittings JIS B2312 Steel pipe fittings JIS B2313 steel plate welded pipe fittings JIS B2316 steel socket welding pipe fittings pipe fittings execution standards American Standard: Standard Number Description ASME / ANSI B16.9 factory manufacture forged steel pipe fittings ASME / ANSI B16.11 socket welding and threaded forged pipe fittings ASME / ANSI B16.28 steel welded small radius bends and hairpin bends ASME B16.5 Pipe Flanges and Flanged Fittings MSS SP-43 Forged steel pipe fittings MSS SP-79 socket welding reducer inserts MSS SP-83 socket welding and threaded union MSS SP-97 socket welding , threaded and butt end of the overall strengthening type header power Standard Standard No. Description GB2000 thermal power plant steam piping parts and components for a typical power plant design manual DL/T515-93 elbow D-GD87-1101 pipe parts and fittings typical design performance standards The Chemical Standard: Standard Number Description HGJ514 carbon and low alloy steel seamless pipe fittings HGJ528 seam pipe fittings HGJ10 Forged steel socket welding fittings HGJ529 Forged steel socket welding, threaded and welded tube station HGJ -44-76-91 steel pipe flanges, gaskets, fasteners HG20592-20635 steel pipe flanges, gaskets, fasteners Sinopec Standard Standard No. Description SH3406 -1996 Petrochemical Steel Pipe Flanges SH3408 - 1996 steel welded seamless pipe fittings SH3409-1996 Forged steel socket welding fittings SH3410 -1996 Forged steel socket welding fittings SH3065-1994 Petroleum and Chemical tube furnace pipe bends technical standards describe the national standard GB12459-2005 standard number of steel made of steel plate welded seamless pipe fittings pipe fittings GB/T13401 GB/T14383 Forged steel socket welding fittings GB/T10752-1995 GB/T17185-1995 marine steel butt weld pipe fittings steel pipe flanges standard implementation of standards among oil : Standard Number Description SY/T0510-1998 SY/T5257-2004 steel pipe fittings steel pipe fittings steel pipe 02S403 National Building Standard Standard CB/T3590-94 marine aluminum brass elbow