ANSI B 16.5 Welding Neck Flanges (carbon steel flange) Zhangqiu Zhenyu Forging Co., Ltd Base Info Model NO.:DN1,2-DN24 flangesStandard:ANSIType:Welding FlangeMaterial:Carbon SteelStructure:RoundConnection:WeldingSealing Surface:RFManufacturing Way:ForgingThe Material:Carbon Steel Description Pre:304 Stainless Steel Cross Countersunk Head Screw Next:China Factory Round Head Phillips Self Tapping Screw with Washer