ERW welding method-induction welding

Induction welding is to put one or more turns of induction coil outside the welded steel pipe. The effect of multi-turn is better than single-turn, but it is more difficult to manufacture and install multi-turn induction coil. If the distance between the induction coil and the steel pipe surface is small, the efficiency is higher, but it is easy to cause electric discharge between the induction coil and the pipe. 

Generally, it is advisable to keep the induction coil 5-8 mm away from the surface of the steel pipe. When using induction welding, since the induction coil is not in contact with the steel plate, there is no wear, and the induction current is relatively stable, which ensures the stability during welding. The surface quality of the steel pipe during welding is good, and the weld seam is flat. For precision pipes, induction welding is basically used.

 

Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.