... center, they can safely be permitted to be higher than in other types of flanges.General Description1,Carbon steel, stainless steel and ... Flanges are the connectors used in process piping to connect pipe to tees, elbows, valves, pumps and whatever other equipment may be necessary ... we can supply: WN, SO, BL, plate, thread, socket and other special shapes6) Kinds of forging:a) Free forgingb) Die forgingc ...