The uneven wall thickness of seamless steel pipes is mainly reflected in the uneven spiral wall thickness, the linear uneven wall thickness, and the thicker and thinner wall thickness at the head and tail.

For spiral steel pipe manufacturers often need to perform welding and other work during use, what I want to share here today is the harm of magnetic field when spiral steel pipe manufacturers are welding.

Insulation steel pipe is an important factor affecting energy saving, and the development and application of insulation steel pipe have received more and more attention from countries all over the world.

The thickness of the insulation layer of polyurethane insulation steel pipe is directly related to the insulation effect. The thicker the insulation layer, the better the insulation material and the better the quality.

Some notes on the transportation, loading and unloading and storage of spiral welded pipes for steel protective cylinders.

The spiral steel pipe adopts a special welding process without any errors and defects, which can ensure the qualification of the spiral steel pipe and the quality is well guaranteed.