At present, there are many sanitary pipe fitting standards in China: DIN (German standard), SMS, ISO (international standard), IDF (International Dairy Federation), 3A, RJT, DS, BS, BPE and other standards; GB is a mandatory Chinese national standard, GB /T is a recommended Chinese national standard, ("T" means recommended).
Standard number: GB/T 12459-2005
Standard name: Steel butt welded seamless pipe fittings
Chinese standard GB12459 steel butt welded seamless pipe fittings
GB/T13401 Steel plate butt welding pipe fittings
GB/T14383 Forged steel socket welded pipe fittings
GB/T14626 Forged steel threaded pipe fittings
GB9112-9131 Steel pipe flanges, flange covers and gaskets for flanges
Sinopec standards: SH3408 steel butt welding seamless pipe fittings, SH3409 forged steel socket welding pipe fittings, SH3410 steel plate butt welding pipe fittings, SH3406 petrochemical steel pipe flanges.
Ministry of Chemical Industry standards: HGJ514 carbon steel and low alloy steel seamless butt welding pipe fittings, HGJ528 steel seam butt welding pipe fittings, HGJ10 forged steel socket welding pipe fittings, HGJ529 forged steel socket welding, SH3406 petrochemical steel pipe making method Flanged, threaded and butt welded pipes; CNPC standards: SY/T0510-1998 Steel butt welded pipe fittings, SY5257-91 Steel elbow electric power standard, GD87-1101 Typical design manual for steam and water pipe parts and components in thermal power plants, DL/T515 Power station bend pipe.
US Standards: ASME/ANSIB16.9 Factory-made forged steel butt weld fittings, ASME/ANSIB16.11 Socket weld and threaded forged fittings, ASME/ANSIB16.28 Steel butt weld small radius elbows and return bends, ASMEB16.5 Pipe flanges and flange accessories, MSSSP-43 forged stainless steel butt weld fittings, MSSSP-83 socket weld and threaded unions, MSSSP-97 integrally reinforced pipe seats with socket weld, threaded and butt weld ends.
Japanese standards: JISB2311 general steel butt welding pipe fittings, JISB2312 steel butt welding pipe fittings, JISB2313 steel plate butt welding pipe fittings, JISB2316 steel socket welding pipe fittings.
Sanitary pipe fittings material standards: 304, 316L, 316.
Specification standard: Φ19.1-325 thickness 1--5; finish standard: internal and external mirror finish Ra≤0.8μmm, inner wall mechanical polishing and electropolishing Ra≤0.2μmm, external surface polished or matt.