Description of the standard knowledge of pipe fittings

The standards for stainless steel fittings are:
    Sinopec standard: SH3408 steel butt welded seamless pipe fittings, SH3409 forged steel socket welded pipe fittings SH3410 steel plate butt welded pipe fittings, SH3406 petrochemical steel pipe flange.
    Ministry of Chemical Industry Standard: HGJ514 carbon steel, low alloy steel seamless butt welded pipe fittings, HGJ528 steel seam welded butt welded pipe fittings, HGJ10 forged steel socket welded pipe fittings, HGJ529 forged steel socket welding, SH3406 petrochemical steel pipe method Blue, threaded and butt welded pipe table, HGJ-44-76-91 steel pipe flange, gasket, fastener HG20592-20635 steel pipe flange, gasket, fastener.
    PetroChina Standard: SY/T0510-1998 steel butt welded pipe fittings, SY5257-91 steel elbow power standard, GD87-1101 typical design manual for steam and water pipe parts and components of thermal power plant, DL/T515 power station elbow.
    American Standard: ASME/ANSI B16.9 factory forged steel butt welded pipe fittings, ASME/ANSI B16.11 socket welded and threaded forged fittings, ASME/ANSI B16.28 steel butt welded small radius elbows and turning back, ASME B 16.5 Pipe flange and flange fittings, MSSSP-43 forged stainless steel butt welded fittings, MSSSP-83 socket weld and threaded union, MSSSP-97 socket weld, threaded and butt welded end integral reinforced socket.
    Japanese standard: JISB2311 general steel butt welded pipe fittings, JISB2312 steel butt welded pipe fittings, JISB2313 steel butt welded pipe fittings, JISB2316 steel socket welded pipe fittings.