ASTM A36 Ss400 S235jr Q235B Q345 Q355 Hot-DIP Galvanized Mild Steel Square Pipe Rectangular Tube Ms Gi Hollow Section Steel Tube 2X4 6m 12m Tubing Price
Factory Direct Customized Size Hot DIP Round Galvanized Steel Tube ASTM A53 Black Pipe Carbon Seamless Steel Pipe for Oil and Gas Pipeline