Mild steel welding is used in SC - 11, bulges, boiler tube with dcwelding etc.
软钢SC-11焊条是用于管子、油槽、锅炉等用直流焊接。
2
This tungsten is used primarily for DCwelding but will also show good results for AC welding.
镧钨电极主要用于直流焊接，但用于交流焊接时也表现良好。
3
A square-wave AC high-frequency welding power source is composed of the square-wave AC high-frequency generator and DCwelding machine controlled by thyristor.