... , 10CrMo910,,27SiMn, 15CrMo, 30CrMo, 34CrMo420G, 20MnG, 15MnG, 15MoG20MoG, 12CrMoG, 12Cr2MoVGSpecification:O.D.12-1020mm, W.T. 1-60mm.Marking:as per customer ... 's requirementPacking:Bundles, seaworthy wooden casesWith or without edge protector, steel ...