Stainless steel welded pipe is a pipe made of stainless steel sheet as raw material and processed through a series of production processes. The surface of stainless steel welded pipe is bright and smooth, with excellent corrosion resistance, high-temperature resistance, non-toxicity, pressure resistance, etc. Stainless steel welded pipe is mainly used in petroleum, chemical, pharmaceutical, fertilizer, food, shipbuilding, textile, national defense, and many other fields to transport fluids and gases.