High-frequency pipe has many problems. Pipe opening is one of them. Below we will introduce you the problem and its relevant solutions.

(1) Characteristics

Crack openings > = 0.4 mm. Welded joint is straight. Plate edge end face without melting trace or with melting trace is not welded. Both ends of cracks are very pointed and extend along the weld direction. Leak seriously when testing water pressure.

(2) Causes

1) The blank width is less than the negative tolerance, so high-frequency steel tubes can not be welded.

2) Roller bearing is damaged which results in insufficient pressure.

3) The heat output is not enough, and the welding temperature is too low.

(3) Methods of prevention

1) Check frequently strip steel geometric dimension. It is prohibited to use strip steel with ultra width and negative deviation.

2) High frequency heat output and welding speed should be matched properly.

3) Check whether the roller bearing is damaged or not. Change it timely to guarantee the roller enough pressure if the roller bearing has losses.

To this problem, Prime Steel Pipe as a steel products manufacturer and exporter, will pay close attention to it to offer our customer high quality steel pipe.