Carbon steel pipe is one of the most widely used pipe products. The main material in q235,20 #, 35 #, 45 #, 16mn based. The main products include carbon steel elbow, carbon steel flanges, carbon steel tee, carbon steel Stone, steel-diameter pipe (size head), carbon steel head (cap) and so on. The main performance standards include GB, American Standard, the Japanese standard, with its Chinese Ministry of Chemical Industry standard also includes standard, Sinopec standard fittings, electrical fittings standards. SH3406 SH3408 Petrochemical steel pipe flange welded steel seamless pipe fittings SH3409 SH3410 Forged steel socket welding pipe fittings made of steel pipe fittings GD87-1101 thermal power plant piping parts and components of a typical soda Design Manual DL / T515 Bend Power Station National Standard GB12459 steel welded GB / T13401 steel seamless pipe fittings made of pipe fittings GB / T14383 Forged steel socket welding pipe fittings GB / T14626 Forged steel threaded pipe fittings GB9112-9131 steel pipe flange, flange cover and law Portland gasket American standard ASME / ANSI B16.9 factory-made forged steel pipe fittings ASME / ANSI B16.11 Socket welding and threaded forged fittings ASME / ANSI B16.28 steel welded small radius bends and hairpin ASME B16.5 Pipe Flanges and Flanged Fittings MSS SP-43 forged stainless steel pipe fittings MSS SP-83 socket welding and threaded union MSS SP-97 socket welding, threaded and butt weld end of the overall strengthening of pipe seat