Steel Pipe & TubeChina API 5L X70 X65 X60 X52 LSAW Pipe 3PE, Large Diameter LSAW Carbon Steel Pipe Bend Tube, Find details about China Heat-Exchanger, Pipe Fittings from API 5L X70 X65 X60 X52 LSAW Pipe 3PE, Large Diameter LSAW Carbon Steel Pipe Bend Tube