resurfacing of rail
... 矫直钢轨 staightening of kinked rail 焊修钢轨；堆焊钢轨 resurfacing of rail 打磨钢轨 rail grinding ...
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本发明公开了一种钢轨、贝尔岔心和尖轨的焊修方法及其焊丝。
The present invention discloses welding repair method and welding wire for steel rail, Bell frog and switch rail.
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