The American Standard Pipe: Standard Number Description ASME / ANSI B16.9 factory-made forged pipe fittings ASME / ANSI B16.11 socket welding and threaded forged pipe fittings ASME / ANSI B16.28 steel welded small radius bends head and back bends ASME B16.5 Pipe Flanges and Flanged Fittings MSS SP-43 Forged steel pipe fittings MSS SP-79 socket welding reducer inserts MSS SP-83 socket welding and threaded union MSS SP- 97 socket welding, threaded and butt end of the overall strengthening seat welded elbow pipe prior to welding, welding deformation in order to avoid long production Cr9Mo socket elbow, the whole group on both sides of the elbow into the outermost tile both ends of the alignment, the use of stainless steel arc board and keel reinforcement is good. In accordance with conventional welding methods, argon welding needs, taking into account the cost and shrimp waist welding large diameter, more difficult argon, using the above factors in the welding, while the outer two welders welding symmetry, both good solution argon problems, but also very good shape. Spot welding process using argon welding joint. Electrode selection A022, wire selection: HOOCr21Nil0. Lower using arc welding primer. Before welding work GB Cr9Mo socket elbow, in the left and right sides of each weld 100mm range, rock chalk powder brush to prevent splashing pipe surface adhesion before, during welding operations, using a small current. Multi-layer multi-channel, continuous welding. After the completion of the overall welding, weld spatter on the elbow joints and surfaces polished to ensure that material Cr9Mo socket elbow, for prefabricated tile finished welding, non-destructive testing, internal and external weld surface pickling, passivation technology. The pickling completed elbow transported to the installation site, the final on-site installation work. Long production Cr9Mo socket socket elbow _ elbow _Cr9Mo provided by Hebei Hebei Cathay Cathay. If you have any questions about this information or consultation, please contact us now! Our Company Name: Hebei Cathay Pacific Pipeline Equipment Co., Ltd. (www.hbgtgd.com) Contact: Liu, or click on "Business League call" direct dialogue with us!