When switched on. By rapid movement of ERW pipe, the welding scar leveling. Used for low pressure liquid or made many engineering components and light industrial products. The shape of the steel tube can be square or round can be profiled depends on the sizing rolling after welding. Welded pipe inside burr is generally not cleared.

Effective heating time is longer, high-frequency induction coil, induction coil position control high frequency should be close to squeeze roll position as far as possible.

Impedance of cross-sectional area usually should not be less than 70% steel pipe diameter of sectional area, induction coil, its role is to make the pipe weld edge and magnet form a electromagnetic induction circuit, impedance device is a magnet for or a compound tube. If the extrusion pressure is too small, the amount of common crystal small, weld metal strength drops, stress produces after cracking; If the extrusion pressure is too large, will make molten metal being squeezed out of the seam, not only reduce the weld strength, and can produce a large number of inside and outside burr, even cause the welding seam defects such as.

Products can be said to be the reliable quality, welcome to visit I stand. Straight seam welded steel pipe is made by high frequency welding machine to certain specifications of strip steel coil into circular tube and straight seam welded steel pipe. Mild steel welded Tool Holder steel pipe material is mainly and sigma acuities were 300 n/s was sigma acuities were 500 n/s was low alloy steel and other steel products. Product quality is not blown out below will take you to see what is in the eyes of a product, straight seam steel pipe, for example:

High production efficiency, low interest rates, the characteristics of continuous production, fast straight seam steel pipe has a relatively simple process. The shape of the steel tube can be square or round can be profiled depends on the sizing rolling after welding. Clear method is fixed rack cutter, weld after welding and extrusion welding scar.

To clear. Considerate service will make you eat.

Straight seam welded steel pipe is made by high frequency welding machine to certain specifications of strip steel coil into circular tube and straight seam welded steel pipe. Civil construction, petrochemicals, light industry and other departments have broad USES. If the induction coil located away from the squeezing roller. Impedance device by pipe wall friction loss is bigger, often need to change. Mild steel welded steel pipe material is mainly and sigma acuities were 300 n/s was sigma acuities were 500 n/s was low alloy steel and other steel products. Impedance for a drag within the tube billet, steel wire

Due to the tube billet rapid movement, the center should be relatively fixed position in the center of the close to squeeze roll.

. Proximity effect occurs, eddy heat concentrated near the pipe weld edge, the tube billet is heated to the welding temperature.

Squeeze roll extrusion, extrusion pressure control of two edges of billet heating after the soldering temperature. To form a common metal grain interpenetrate, crystallization, eventually forming solid weld. Heat affected area broad, weld strength; On the Straight Shank other hand, the lack of weld edge heating, bad after extrusion molding