... 20Mn2,30Mn2,40Mn2,20CrMo,30CrMo35CrMo,42CrMo GB/T8162Machine elements,pipe fittings,netware 140-340 6-35 35#,45#, ... /T17396Mining machinery manufacturePetroleum cracking tube140-340 6-35 20#,16Mn,12CrMo,15CrMo,T5,T9 GB9948ASMESA213 Cracked stillHigh- ... pressure fertilizer pipe140-340 6-35 20#,16Mn,12CrMo,15CrMo GB6479Chemical fertilizer equipmentsAutomobile axle housing ...