Oil steel round pipe 1.Material Q235, Q345, Q195, Q215 2.O.D: 4''-14'' ,W.T: 1.5-75mm 3.transporting ... fluids 4.Hot dipped Oil steel round pipe High ... Q235, Q345, Q195, Q215 ,etc2..specification type Outer Diameter Thickness Round Pipe 32mm - 630mm 2.5mm-75.0mm Square Pipe 10mm ...