API 5L Large Diameter Welded Carbon Steel Line Pipe

API Spiral welded steel pipe is a type of steel pipe manufactured using spiral welding technology. Its characteristics include uniform wall thickness, large diameter, and capability to efficiently meet the demands of long-distance bulk fluid transportation. Compared to other welded steel pipes, spiral welded pipes also offer higher strength and corrosion resistance.

The manufacturing process of spiral welded steel pipes involves several key steps: First, steel plates are cut into strips of specific length. These strips are then formed into a spiral shape before undergoing seam welding through automatic submerged arc welding or double-sided submerged arc welding. Finally, the pipes undergo straightening and hydrostatic testing to ensure quality control.

Application Fields

Spiral welded steel pipes are widely used in industries including oil, natural gas, chemical processing, water supply, and drainage. In the oil and gas sector, these pipes are employed for transporting and storing both liquid and gaseous media. In chemical applications, they primarily serve for conveying various chemical substances.

Specification