If the welder has not welded with a process during a period of 6 months or more, his qualification of that process shall expire.
如果某焊工在六个月或以上时间未从事焊接工作，则其资质将作无效处理。
2
He says a little machining needs to be done on the cathode tube, making a threaded bolt hub that is welded to the tube via an inert gas shield welder, or tig.
他说，一点点加工需要做的阴极管，螺纹螺栓作出枢纽这是焊接管通过一个惰性气体保护焊机，氩弧焊或。
3
All the moving parts of the welder shall be shut down during maintenance or repair.