What are the national standards for pipe fittings?

China Fittings Standard

GB12459 Steel welded seamless pipe
Butt welded pipe fittings made of steel plate
GB / T14383 Forged Steel Socket Welding Pipe Fittings
GB / T14626 Threaded pipe fittings of wrought steel
Steel pipe flanges, flange covers and gaskets for flanges

Sinopec Standard

SH3406 Petrochemical Steel Pipe Flanges
SH3408 Steel Butt Welded Seamless Pipe
SH3409 Forged Steel Socket Welded Pipe Fittings
SH3410 Steel Plate Butt Welded Pipe Fittings

Chemical Industry Standard

HGJ514 Carbon Steel and Low Alloy Steel Seamless Butt Welded Pipe Fittings
HGJ528 steel welded joint pipe fittings
HGJ10 forged steel socket welded pipe fittings
HGJ529 Forged Steel Socket Welded, Threaded and Counterwelded Pipe Stands
HGJ-44-76-91 Steel pipe flanges, gaskets, fasteners
HG20592-20635 Steel pipe flanges, gaskets, fasteners

PetroChina Standard

SY / T0510-1998 Welded steel pipe fittings
SY5257-91 steel pipe

Electricity Standard

GD87-1101 Design Manual for Representative Parts and Components of Steam and water piping in Power Plants
DL / T515 Power Station Bend

American Standard

Forged steel welded fittings manufactured at ASME / ANSI B16.9
ASME / ANSI B16.11 Socket Welded and Threaded Forged Fittings
ASME / ANSI B16.28 Steel Butt Welded Small Radius Elbows and Return Bends
ASME B16.5 Pipe flanges and flanged fittings
ASME / ANSI B16.36 orifice flanges
ASME B16.47 Large Diameter Steel Flange
MSSP-43 Forged stainless steel welded pipe fittings
MSS SP-83 socket and threaded unions
MSS SP-97 Socket Welded, Threaded and Butt Welded End Integral Reinforced Tubular Sockets
ANSI / ASME B36.10 Seamless and welded steel tubes
ANSI / ASME B36.19 Stainless Steel Seamless and Welded Pipe

Japanese Standards

JIS B2311 Universal Steel Butt Welded Pipe Fittings
JIS B2312 Steel Butt Welded Pipe Fittings
Butt welded pipe fittings made of JIS B2313 steel plate
JIS B2316 Steel Socket Welded Pipe Fittings
JIS B2302 Steel Threaded Connection Fittings
JIS B2220 Steel pipe flanges
JIS B2201 Ferritic Material Pipe Flanges Pressure Classes
JIS B2404 Spiral Wound Gasket for Pipe Valve Blue
JIS G3452 General Purpose Carbon Steel Pipe
JIS G3454 carbon steel pipe for pressure
JIS G3455 carbon steel pipe for pressure
JIS G3456 high temperature carbon steel pipe
JIS G3457 Electric arc welding carbon steel pipe
JIS G3458 alloy steel pipe
JIS G3459 stainless steel pipe
Large Diameter Stainless Steel Pipe Welded by Electric arc welding

German Standards

DIN2605 Steel Butt Welded Pipe Fittings Elbows and Elbows
DIN2615 Steel Butt Welded Pipe Fittings Tee
DIN2616 Steel Butt Welded Pipe Reducing Pipe
DIN2617 Steel Butt Welded Pipe Fitting Cap
DIN 2527,2573, 2576,2627~2638, 2673,2552,2653, 2655,2656,2641, 2642,2565~2569。