Hebei Cangzhou supply flange, integral flange, stainless steel integral flange, Hongyuan tube industry professional (Contact: Wang Shan 15,922,054,164 QQ: 1,494,092,364) integral flange is a flange connection. Belongs weld neck a steel pipe flanges made of carbon steel, stainless steel, alloy steel. integral flange IF to domestic standards used for high pressure pipe into the body flange is a flange connection. Also part of a weld neck steel pipe flanges. Made of carbon steel, stainless steel, alloy steel. IF to domestic standards, the overall flange. More for the higher pressure pipelines. Production wrought. Flange type is to use an "IF" to represent the whole flange type. The usually sudden face (RF), being in the use of flammable, explosive, highly and extremely hazardous conditions, you can choose in addition to the outside of the RF surface concave surface (MFM) and tongue and groove surface (TG) seal surface in the form of