ASTM A105n So RF Flange BS 3293 Forged 30 Inch Class 150 Bo Yue Industrial(Shanghai)Co. Ltd Base Info Model NO.:009Standard:ANSI, DIN, GB, JISType:Welding FlangeMaterial:Carbon SteelStructure:FlangesConnection:WeldingSealing Surface:RFManufacturing Way:Forging Description Pre:ASTM A105 Blind RF Flange ANSI B16.5 Forged 1 Inch RF Cl900 Next:ASTM A182 F316L Threaded Flange ASME B16.5 Forged 3 Inch 150lb