ASME/ANSI B16.9 Factory manufacturing seamless steel butt welding pipe fittings
ASME B16.5 Pipe flanges and flange fittings
GB/T 12459—2005 Steel butt welding seamless pipe fittings
Pipe products mainly include: elbow, tee, reducer, pipe cap, O-let, etc.,Flange products mainly include: butt welding flange, with flat welding neck flange, socket welding neck flange, butt welding band neck loose flange, plate, flat welding flange, butt welding plate loose flange rings, flat welding ring plate loose flange, flange ring plate flange, flange cover, etc