There are many standards for stainless steel seamless elbows. The common ones are national standards, American standards, Japanese standards, electric power standards, chemical standards, marine standards, etc. The following are listed below.
National standard
Standard number description
GB/T12459-2005 Steel butt welded seamless pipe fittings
GB/T13401-2005 Steel plate butt welding pipe fittings
GB/T14383 Forged steel socket welded pipe fittings
GB/T17185-1995 steel flange fittings
Among the pipe fittings implementation standards, petroleum standards:
Standard number description
SY/T0510-1998 Steel butt welding pipe fittings
SY/T5257-2004 steel elbow
02S403 National Building Standard for Steel Pipe Fittings
Japanese standard
Standard No. Description JISB2311 General Steel Butt Welding Pipe Fittings
JISB2312 steel butt welding pipe fittings
JISB2313 steel plate butt welding pipe fittings
JISB2316 steel socket welded pipe fittings
American standards for pipe fittings execution standards:
Standard number description
ASME/ANSIB16.9 Factory Made Forged Steel Butt Weld Fittings
ASME/ANSIB16.11 Socket Weld and Threaded Forged Fittings
ASME/ANSIB16.28 steel butt welding small radius elbow and return bend
ASMEB16.5 pipe flange and flange accessories
MSSSP-43 forged stainless steel butt welding pipe fittings
MSSSP-79 socket welding reducing insert
MSSSP-83 Socket Weld and Threaded Union
MSSSP-97 integrally reinforced pipe socket for socket weld, threaded and butt weld ends
Electricity standards
Standard number description
GB2000 Typical Design Manual for Steam and Water Pipe Parts and Components of Thermal Power Plants
DL/T515-93 power station elbow
D-GD87-1101 typical design of pipe parts and components
Chemical standards for pipe fittings implementation standards:
Standard number description
HGJ514 carbon steel, low alloy steel seamless butt welding pipe fittings
HGJ528 steel seam butt welded pipe fittings
HGJ10 forged steel socket welded pipe fittings
HGJ529 forged steel socket welding, threaded and butt welding pipe stands
HGJ-44-76-91 steel pipe flange, gasket, fasteners
HG20592-20635 steel pipe flange, gasket, fasteners
Sinopec standards
Standard number description
SH3406-1996 Petrochemical Steel Pipe Flange
SH3408-1996 steel butt welded seamless pipe fittings
SH3409-1996 forged steel socket welded pipe fittings
SH3410-1996 forged steel socket welded pipe fittings
SH3065-1994 Technical Standard for Sharp Bends of Petrochemical Tube Furnaces
Marine standards
GB/T10752-1995 Marine steel pipe butt welding joints
CB/T3590-94 aluminum brass elbow