Factory Direct Sale SSAW Carbon Welded Large Diameter API 5lx52 Psl-1 12m ASTM A252 A36 Spiral Submerged Arc-Welding Pipe for Oil Pipeline Construction
Factory Direct Sale SSAW Carbon Welded Large Diameter API 5lx52 Psl-1 12m ASTM A252 A36 Spiral Submerged Arc-Welding Pipe for Oil Pipeline Construction