Spiral welded pipe
The trend of rapid and stable growth in demand for spiral steel pipes in the market will not fundamentally change. Whether the spiral steel pipe market can maintain a stable and rapid development hub depends on changes in demand. The macroeconomic regulation at the policy level will bring about a certain slowdown in the market growth rate in the future.
The main raw materials are molten iron and scrap steel. The sulfur and phosphorus content in steel is higher than that of high-quality carbon structural steel, with sulfur ≤ 0.050% and phosphorus ≤ 0.045%. The content of other alloying elements brought into steel by raw materials, such as chromium, nickel, and copper, generally does not exceed 0.30%. According to composition and performance requirements, the grades of such steel are represented by steel grades such as Q195, Q215A, B, Q235A, B, C, D, Q255A, B, Q275, etc.