Carbon Steel Butt Weld Flange Hebei Zhuorun Oil and Gas Pipeline Co., Ltd. Base Info Standard:ANSIType:Welding FlangeMaterial:Carbon SteelManufacturing Way:ForgingTrademark:JINGUANOrigin:Cangzhou City,Hebei Province,China Description Pre:Duplex Bulege Acorn Stainless Steel Capped Nut (1702SS) Next:Carbon Steel High Pressure Flange