Standard

SH3406 petrochemical steel pipe flange

SH3408 Steel Butt Welding Seamless Fittings

SH3409 Forged Steel Socket Welding Fittings

SH3410 Steel Plate Butt Welding Fittings GD87-1101 Typical Design Manual for Steam and Water Piping Parts and Components in Thermal Power Plants

DL/T515 Power Station Elbow National Standard GB12459 Steel Butt Welding Seamless Fittings

GB/T13401 steel plate butt welding pipe fittings

GB/T14383 Forged steel socket welding pipe fittings

GB/T14626 Forged steel threaded pipe fittings

GB9112-9131 Steel pipe flanges, flange covers and gaskets for flanges

American standard

ASME/ANSI B16.9 Factory Made Forged Steel Butt Weld Fittings

ASME/ANSI B16.11 Socket Weld and Threaded Forged Fittings

ASME/ANSI B16.28 Steel Butt Welding Small Radius Elbows and Return Elbows

ASME B16.5 Pipe Flanges and Flange Fittings

MSS SP-43 Forged Stainless Steel Butt Welding Fittings

MSS SP-83 Socket Weld and Threaded Unions

MSS SP-97 Integral reinforced sockets for socket weld, threaded and butt weld ends