Beginning in 1925 the plant had begun to use gas and electricwelding in the production of steam locomotives.
从1925年开始工厂开始在蒸汽机车的生产中使用电焊和气焊。
2
Loose joint electricwelding training clamp is a training apparatus that used for making the cumulative oil production plant welder welding training activities and improving water welding technology.