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How many standards of sanitary pipe fitting

The sanitary fittings standard: made by ISO, GB, DIN, 3 a, IDF, such as for manufacturing, industrial pipe fittings standards: GB (GB), JIS (Japanese standard), DIN (German standard), ASTM/ASME (American standard), such as standard. GB is mandatory national standards, is the recommended national standards GB/T.
Sanitary fittings standard: DIN (Germany standard), SMS, ISO (international standards), IDF (international), 3 a, RJT, DS, BS, BPE standard, etc.
Industrial pipe standards: GB (national standard), JIS (Japanese standard), DIN (German standard), ASTM/ASME (American standard), such as standard.
GB is mandatory national standard, GB/T is recommended national standard.
Sinopec standards: sinopec SH3408 steel seamless pipe butt welding, socket welding pipe fittings SH3410 SH3409 forging steel plate butt welding pipe fittings, SH3406 petrochemical steel pipe flanges.
Chemical standards: HGJ514 seamless butt welding pipe fittings, carbon steel, low alloy steel HGJ528 steel seam welded pipe fittings, HGJ10 socket welding fittings, forged steel HGJ529 forging steel socket welding, SH3406 petrochemical steel pipe flange, threaded and welded to take over.
Taiwan, HGJ - 44-76-91 steel pipe flanges, gaskets and fasteners HG20592-20635 steel pipe flanges, gaskets, fasteners.
Petrochina standard SY/T0510-1998 steel butt welding pipe fittings, SY5257-91 steel pipe bending power standard, GD87-1101 thermal power plant steaming-water pipe parts and components of typical design manual, DL/bend T515 power station.
American standard: ASME/ANSIB16.9 factory forged steel butt welding pipe fittings, ASME/ANSIB16.11 forged socket welding and threaded pipe fittings, ASME/ANSIB16.28 steel butt welding of small radius sanitary elbow and back bend, ASMEB16.5 pipe flanges and flanged fittings.
Japanese standards: JISB2311 general steel butt welding pipe fittings, JISB2312 steel butt welding pipe fittings, JISB2313 steel butt welding pipe fittings, JISB2316 steel socket welding pipe fittings.
Sanitary fittings market as the core of the domestic production technology, will become the focus of attention.