Long Welding Neck Flange Shanxi Shuanglin Forging Co. Ltd Base Info Model NO.：forgedStandard：ANSI, DIN, GB, JIS, GOST, BSW, En 1092-1Type：Welding FlangeMaterial：Alloy SteelManufacturing Way：Forging Description Pre：Aluminum Alloy Connector of Lean Racks Next：A234 Steel Pipe Cap
