Material: carbon steel Grade: Q195, Q215A, Q235A, B, Q275, Q345A, B Section: Round Technique: ERW (Electrical Resistance Welding Material: carbon steel Grade: Q195, Q215A, Q235A, B, Q275, Q345A, B Section: Round Technique: ERW (Electrical Resistance Welding) Standard Pipe Length: 6m/12m; Customized Application: Used for the conveyance of running water, gas, air, sewage, heating steam and water, ...