High frequecy resistance welded pipe mill usually consists of flow forming, high frequency welding, extrusion, cooling, sizing, flying saw cutting units, the front end unit with accumulator looper, the rear end of unit with a steel fram plipping, electrical prat of the main high frequency generator, DC generator exictation and instrument control devices and other components. Taking our OD 165mm frequency welded pipe units as an example, the main technical parameters are as follows:

3.1 Finished Pipe:

Tube outer diameter: φ111 ~ 165mm

Square tube: 50 × 50 ~ 125 × 125mm

Rectangular tube: 90 × 50 ~ 160 × 60 ~ 180 × 80mm

Finished wall thickness: 2 ~ 6mm

3.2 Forming speed: 20 to 70 m / min

3.3 High Frequency Sensor:

Thermal power: 600KW

Output frequency: 200 ~ 250KHz

Power supply: Three-phase 380V 50Hz

Cooling: Water-cooled