... AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for WaterAPI 5L Line PipeASTM A252 welded ... 5040,CJ/T 3022:Q195, Q215, Q235, Q275, Q295, Q345Size:Outer Diameter: 219.1mm - 3500mm Wall Thickness: 6 mm - 28mmEnd: ... 5. Precision Leveling 6. Delivering 7. Forming By Inner and Outer Welding 8. Welding Slag leaning & Overall Inspection 9. Repair Welding ...