1.Standard: GB 5130 2.Grade: 20G, 20MnG, 25MnG, 15MoG,20MoG, 12CrMoG, 15CrMoG,12Cr2MoG. 3.OD: 22-530 mm 4.Thickness:0.40-70mm Standard: GB 5130Grade: 20G, 20MnG, 25MnG, 15MoG,20MoG, 12CrMoG, 15CrMoG,12Cr2MoG, 12Cr1MoVG,12Cr2MoWVTiB, 12Cr3MoVSiTiB,10Cr9Mo1VNb.Out Diameter: 22-530 mmThickness:0.40-70mmLength:39.34'/12M.maxFOB Price/MT:USD680--1,580.00MOQ:10MT Usage:Seamless Steel Tubes for High ...