Welding process of welded pipe unit adopts uncoiling, clamping, straightening, shearing, directional, butt welding, bending needle, medium, the process can be described as complex and changeable.
Welded pipe
The specific butt welding process is as follows:
1. After the coil is positioned, the left and right conical heads of the uncoiler can insert the coil and rotate at the same time. The lead wire is fed into the clamping roll. The roller of the pressing roll is pressed down, and the coil car and the magnetic roll can return in situ.


2. Spring steel can be operated accurately in the center, and the overall axial motion is + 150 mm before uncoiling. After the uncoiler starts, the strip passes through the compacting roll to the leveler equipped with dust removal device.


3. Straightening of spring steel strip with sliding hydraulic shears on the head and tail of strip cutting (strip head can slide into the scrap immediately, strip tail can be cut off by output device to collect special containers online).