Seamless steel pipe details: 1: GB, ISO , API certificate. 2: 80000 ton per month. 3: fluid tube,boiler tube Carbon ... On time delivery4.Reasonable price5.Samples ,OEM available 1,Accu-roll unit(OD114—273mm. WALL THICKNESS 6-25mm.LENGTH 6-12 ... A,B60005Transmission fluid tube10#,20#,Q295,Q345,Q390300006Structural use of seamless steel tubes10#~45#,40Mn2,35Cr,35CrMo500007Hydraulic pillar tube, cylinder ...