... B,X42~X60(L245~L415)50003high-pressure boiler tube20G50004lower/medium-pressure boiler tube10#,20#,A,B60005Transmission fluid ... #,40Mn2,35Cr,35CrMo500007Hydraulic pillar tube, cylinder sleeve etc.45#,27SiMn20008pipes for high-pressure fertilizer equipment20G,15MnV10009Shipping use ... pillar tube20,30,45,27SiMn225008pipes for high-pressure fertilizer equipment10,20,16Mn,15Mnv,12CrMo,15CrMo90009Structural ...