BW Stainless Steel Pipe OD:1mm-50mm WT:13.7mm-1240mm Standard:ASTMA53, ASTMA106, ASTMA420 Application:Drill Pipe, Oil pipe BW Stainless Steel PipeOD:1mm-50mmWT:13.7mm-1240mmStandard:ASTMA53, ASTMA106, ASTMA420Application:Drill Pipe, Oil pipe Material:Q235,Q345,16Mn, 35CrMo,42CrMo etc. BW Stainless Steel Pipe,API,PED,ISO certificate