Large Diameter 3LPE Oil Pipeline Anti Corrosion Spiral Welded Steel Pipe Spiral Steel Pipe It is made by rolling low-carbon carbon structural steel or ...
Good Quality Q345 Steel Weld Pipe Sch40 Carbon Steel Pipe ERW Welded Black Round Pipe ERW: Electric Resistance Welded Steel Pipe HFI: High Frequency ....
3PE Anticorrosive Insulation Steel Pipe For Oil And Gas Pipeline Transportation The three-layer pipeline coating system mainly composed of DOW HDPE .....