Spiral welded pipe: It is made by rolling low-carbon carbon structural steel or low-alloy structural steel strip into a pipe blank at a certain angle of the spiral line (called the forming angle), and then welding the pipe seam together. It can produce large-diameter steel pipes with narrower strip steel. The specifications are expressed as outer diameter * wall thickness, and the welded pipe should ensure that the hydrostatic test, tensile strength, and cold bending performance of the weld meet the requirements.

In order to improve the durability and corrosion resistance of seamless steel pipes, anti-corrosion treatment is usually carried out during the production process. One common treatment method is hot-dip galvanizing or spraying anti-corrosion coatings. When the sprayed coating is black or contains black components, the surface of the steel pipe will appear darker. This anti-corrosion treatment not only enhances the durability of steel pipes, but also provides better protection in high temperature, humid or corrosive environments.

In order to improve the durability and corrosion resistance of seamless steel pipes, anti-corrosion treatment is usually carried out during the production process. One common treatment method is hot-dip galvanizing or spraying anti-corrosion coatings. When the sprayed coating is black or contains black components, the surface of the steel pipe will appear darker. This anti-corrosion treatment not only enhances the durability of steel pipes, but also provides better protection in high temperature, humid or corrosive environments.

In order to improve the durability and corrosion resistance of seamless steel pipes, anti-corrosion treatment is usually carried out during the production process. One common treatment method is hot-dip galvanizing or spraying anti-corrosion coatings. When the sprayed coating is black or contains black components, the surface of the steel pipe will appear darker. This anti-corrosion treatment not only enhances the durability of steel pipes, but also provides better protection in high temperature, humid or corrosive environments.

Seamless square tube is a long steel strip with a hollow cross-section and no seams around the periphery. The tube is hollow and has a certain cross-sectional area. Circular tubes have certain limitations, such as lower bending strength than square and rectangular tubes under flat bending conditions. Some agricultural machinery skeletons, steel and wood furniture, etc. commonly use square and rectangular tubes.

Seamless square tube is a long steel strip with a hollow cross-section and no seams around the periphery. The tube is hollow and has a certain cross-sectional area. Circular tubes have certain limitations, such as lower bending strength than square and rectangular tubes under flat bending conditions. Some agricultural machinery skeletons, steel and wood furniture, etc. commonly use square and rectangular tubes.