PP-H welding method is commonly used in thermal contact welding and the use of hot gasweldingelectrode .
H 的焊接常用的方法是热接触焊接和使用焊条进行热气焊。
2
All these and other developments show that welding is no longer what it was in time past, the simple matter of running a bead with a gas flame or a stick electrode.
所有这些和其他的新技术都显示焊接不再是过去那样，只用气体火焰或一根焊条焊一道焊缝的简单问题了。
3
In this paper, design principle on gun of automatic CO2 gas shielded welding with thick electrode is discussed.