Welding elbow pre-installation checks

 A welding elbow installation, pipe section should be measured by the root, number, should use the smallest diameter tube section groups differ on the b2, in the face of stitching piping should Hydraulic pipe fittings Hydraulic pipe fittingstube 14CM * 14CM sleeper pad level, should not be used iron pipe, and to minimize tube rolling to avoid damage to the pipeline external co 3, check the pipe section down tube should be preceded by internal and external anti-corrosion layer, after passing the down tube. 4, consisting of pipe pipe section down tube, the tube length of the segment, hanging from, should be based on pipe diameter, wall thickness, outer coating of the material type and method to determine the down tube. Slings should be used vigorously rope or wire hose sets and other soft materials, in order to avoid bad steel outer coating.5, the distance to the Hydraulic adapters Hydraulic adapters is not less than diameter, and not less than 100MM.6, the tube section welding using welding rod should be consistent with the design and specification.7, cleaned the dirt inside the tube and nozzle clean edges and polished on both sides of the weld, it  exposed metallic luster, making groove.