... OD:60-180mm WT:3.5-25 mm Material: 27SiMn Certification:GB/T19001-200... 1,Accu-roll unit ... ,35CrMo500007Hydraulic pillar tube, cylinder sleeve etc.45#,27SiMn20008pipes for high-pressure fertilizer equipment20G,15MnV10009Shipping use of tube320,4101000Total200000FQM ... boiler tube10,20200007Hydraulic pillar tube20,30,45,27SiMn225008pipes for high-pressure fertilizer equipment10,20,16Mn,15Mnv,12CrMo, ...