JHD268[4cr4w8v]鋼廠用埋弧耐磨焊絲                                                             規格；1.2-1.6-2.0-2.5-3.0-4.0，                                             化學成分；C  0.34，Cr  3.68，W  7.17，Mn.  032，Si  0.33.V  0.31，  硬度55                                                              適用于鋼廠軋機卷取機助卷輥，夾送輥堆焊，