There are three cutting methods for thick-walled spiral steel pipe: 1. Mechanical cutting, 2. Oxygen acetylene flame cutting, 3. Ion cutting.1. Mechanical cutting adopts two types of external installation and internal installation. It adopts the principle of turning tool processing to cut and groove

The defects that are easy to occur in the welding area of the spiral steel pipe include air holes, thermal cracks, and undercuts. Spiral steel pipe weld porosity not only affects the tightness of the pipe weld, causing pipeline leakage but also becomes a corrosion induction point, seriously reducing

Thick-walled steel pipes refer to steel pipes whose outer diameter and wall thickness ratio is less than 20 as thick-walled steel pipes. Mainly used as petroleum geological drilling pipe, cracking pipe for the petrochemical industry, boiler pipe, bearing pipe, and high-precision structural pipe for

After the stainless steel pipes are packaged and bundled, they should be stored in a dry and clean environment without corrosive gases to avoid cluttered stacking with other items.Because the surface of stainless steel is relatively smooth and bright, and it is a metal product, it should be handled