Dia: 10mm - 130mm Length: 2.0m - 6.0m 1.Material: 40CrNiMo,20CrMnMo,20CrNi2MoA,18CrNiMo7-6, AISI8822H(20CrNiMo), G20Cr2Ni4,GCr15SiMn, ... ,30Cr2Ni4MoVE and 34CrMo1,SKD61, H13,H11(1.2343),1.2714, 2.25Cr-1Mo and 1.25Cr-0.5Mo,1-4Cr13,304(L), 321,316(L ...