1) Material of weld steel pipe: Q195, Q215, Q235, Q345, X52, X60 STK500, or per the buyers demand.

2) Standards: BS1387, ASTM A or B, GB/T3081, GB/T9711, API 5L, API 5CT

3) Outside diameter: From OD20mm to OD273.1MM

4) Wallthickness: From 0.8mm to 12mm

5) Length of each pipe: 5.8m, 6m, 11.8m or 12m, or per the buyers demand

201(J4)steel pipe