Apart from high-frequency welding, there are also arc welding and resistance welding.
Arc Welding
Arc welding involves melting the edges of steel plates through the heat generated by an electric arc and adding welding material to perform the welding. Arc welding is suitable for the production of welded pipes of various materials and specifications, but its production efficiency is relatively low.
Resistance Welding
Resistance welding utilizes the resistance heat generated when current passes through the welding pieces to melt and weld them together. Resistance welding has the advantages of fast welding speed and a small heat-affected zone, but the equipment investment is relatively large.
