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在气焊施工中,气焊工都用一些简单的工具画圆,遇到操作情况复杂时,割圆工作就会变得非常麻烦。大庆油田采油四厂四矿维修队管工技师张庆松在心里暗暗地下决心改变
In the gas welding construction, gas welders use some simple tools to draw a circle. When the operation is complicated, the cutting work will become very troublesome. Daqing Oilfield Fourth Factory Oilfield four maintenance team manager Zhang Qingsong in the heart secretly determined to change