Alloy Steel Flange (ASTM, DIN) Hebei Zhuorun Oil and Gas Pipeline Co., Ltd. Base Info Model NO.:ASTM, DINStandard:ANSIMaterial:Alloy SteelManufacturing Way:ForgingTrademark:JINGUANSpecification:1,2"-64"Origin:Cangzhou, China(Mainland) Description Pre:Orfs Female Flat Seal Next:Carbon Steel Flange (A234-WPB,A234-WP12,A234-WP11,A234-WP5)