Manufacturing standards: ISO, GB, DIN, 3A, IDF, etc. are used for manufacturing. Industrial pipe fittings standards: GB (national standard), JIS (Japanese standard), DIN (German standard), ASTM/ASME (American standard). And other standards. GB is a mandatory national standard, GB/T is a recommended national standard, ("T" means recommended). Sanitary pipe fittings standards: DIN (German standard), SMS, ISO (international standard), IDF (International Dairy Federation), 3A, RJT, DS, BS, BPE, etc. Industrial pipe fittings standards: GB (national standard), JIS (Japanese standard), DIN (German standard), ASTM/ASME (American standard). And other standards.

GB is a mandatory national standard, GB/T is a recommended national standard, ("T" means recommended).

Standard number: GB/T 12459-2005

Standard name: Sanitary Valve

National standard GB12459 Steel butt welding seamless pipe 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 flange gaskets

Sinopec standard: 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 standard: HGJ514 carbon steel, 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 flanges, threaded and butt welding pipes

PetroChina standard: SY/T0510-1998 steel butt welding pipe fittings, SY5257-91 Electricity standard for steel pipe bends, GD87-1101 Typical design manual for steam and water pipe parts and components of thermal power plants, DL/T515 Power station pipe bends.

American standards: ASME/ANSIB16.9 factory-made forged steel butt-welding pipe fittings, ASME/ANSIB16.11 socket-welding and threaded forged pipe fittings, ASME/ANSIB16.28 steel butt-welding small radius elbows and return elbows, ASMEB16.5 pipe flanges and flange accessories, MSSSP-43 forged stainless steel butt-welding pipe fittings, MSSSP-83 socket-welding and threaded unions, MSSSP-97 socket-welding, threaded and butt-welding end integrally reinforced pipe seats.

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.

Material standards: 304, 316L, 321, 304L, 316.

Specification standards: Φ19.1-159, length is 4m, 6m

Surface finish standard: internal and external mirror finish Ra≤0.8μmm, inner wall mechanical polishing and electropolishing Ra≤0.2μmm, outer surface polished or matte.