1) Sizes of Hot Expanding Steel Pipe: OD38-820mm*3-40mm
2) Standards of Hot Expanding Steel Pipe: GB/T8163/8162, ASTM A53, ASTM A106, JISG3452, JISG3454, DIN1629, API5L
3) Surface of Hot Expanding Steel Pipe: Oiled or black painted to prevent rust, hat both ends, bevel ends
4) Marking: As per customers' requirements
5) Commonly used steel grade: 10#, 20#, 45 #, ST37, ST44, ST52, Q345, Q235 Our factory would provide different kinds of steel pipe and steel tube. If you are interested in the items, please feel free to tell us.