1. The uses of large-diameter straight seam welded pipes can be divided into oil well pipes (casing, oil pipes drill pipes, etc.), pipeline pipes, boiler pipes, mechanical structural pipes, hydraulic support pipes, gas cylinder pipes, geological pipes, chemical pipes (high-pressure fertilizers) pipes, petroleum cracking pipes) and ship pipes, etc.

2. The thicker the wall thickness of the solution, the more cost-effective and sensible it is; the thinner the wall thickness, its processing cost will appreciate significantly;

3. The product process determines its limitations, from the low precision of general seamless steel pipes: uneven wall thickness, low brightness tube appearance, high cost of fixed length, and the appearance of pitting corrosion, black spots are difficult to remove Walk;

4. Detection and plastic must be processed offline. Therefore, large-diameter straight seam welded pipes are under higher pressure and high strength, and the mechanical structure of wood reflects its superiority.

5. The corrosion resistance of large-diameter straight seam welded pipes depends on the alloy components. Chromium is the basic component of corrosion-resistant stainless steel. About 12% of the chromium in the steel. Chromium interacts with the oxygen in the corrosive medium to form a thin oxide film (passivation film) matrix on the steel surface, which can prevent further corrosion of the steel pipe.