材质：GB              ASTM                                        EN（Din）

20#              1020                                        C20C(C22)

35#              1035                                        C35(1.0501)

      45#              1045                                        C45（1.0503）

      50Mn             1053                                        C50(1.0540)

      Q235（16Mn）                                                  S235J2G3(1.0116)

      Q345                                                          S355J2G3(1.0570)

      40Cr              5140                                        41Cr4(1.7035)

      30CrMo            4130                                        25CrMo4(1.7218)

      35CrMo            4135                                        34CrMo4(1.7220)

      42CrMo            4140                                        42CrMo4(1.7225)

      40CrNiMo          4340                                        36CrNiMo4(1.6511)

      20CrMn            5120                                        20MnCr5(1.7147)

尺寸：最大Φ9000mm

Dimensions:  MaxΦ9000mm