... 1,Accu-roll unit(OD114—273mm. WALL THICKNESS 6-25mm.LENGTH 6-12.2m) No.Steel typeSteel gradeannual output/t1Oil ... 20#,A,B60005Transmission fluid tube10#,20#,Q295,Q345,Q390300006Structural use of seamless steel tubes10#~45#,40Mn2,35Cr,35CrMo500007Hydraulic pillar ... #,27SiMn20008pipes for high-pressure fertilizer equipment20G,15MnV10009Shipping use of tube320,4101000Total200000 carbon seamless steel pipe