stt semiautomatic root welding 半自动stt根焊
RMD root welding RMD根焊
STT root welding STT根焊
argon arc root welding 氩弧焊打底
manual arc root welding 手工电弧焊打底
Also, the application of the new machine in pipeline root welding is introduced.
同时也介绍了该设备在管道根焊和高效焊接方面的应用。
The welded joint was completed by root welding, filling welding and cover welding, their welding parameters were obtained from the experimental analysis.
整个焊接接头要通过根焊、填充焊和盖面焊来完成，通过试验分析得到各焊道所对应的焊接工艺参数。
In charge of Chemical, Mechanical and welding Lab, take the responsibilities of the accuracy of testing data, root cause analysis, administration management.
掌管化学、力学、焊接实验室，负责日常试验结果的正确性、准确性，对异常结果的分析及日常行政管理。
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