Asme B16.5 Wn 4" RF Flange Shanxi Longxin Forging Co., Ltd Base Info Standard:ANSIType:Welding FlangeMaterial:Carbon SteelStructure:FlangesConnection:WeldingSealing Surface:RFManufacturing Way:Forging Description Pre:Asme B16.5 2" Wn Flange RF Next:Stainless Flange (Forged) , SS304, SS316