Stainless steel welded pipe is a hollow strip‑shaped annular stainless steel plate, which is mainly used for industrial production of gas pipelines and mechanical structural components such as crude oil, chemical plants, diagnosis and treatment, food, light industry, mechanical equipment instrument panels, etc. On the other hand, when the sheet metal bending, torsional and compressive strength are the same, the net weight is light, so it is also commonly used to manufacture mechanical parts and engineering project structures.

1. Industrial production of trolley air intake system: The key to using stainless steel plate is the air intake system, which accounts for about 1/2 of the total use of trolley stainless steel plate, and 90% is stainless steel round pipe. The organic exhaust gas caused by the engine is then discharged from the muffler according to the organic exhaust gas intake manifold, front pipe, plastic hose, converter, zhongxin pipe. Common alloy structural steels for intake systems are 409L, 436L, etc. The key application of automobile muffler is stainless steel welded pipe. According to calculations, the stainless steel pipes used in the trolley account for about 1.6% of the total use of stainless steel pipes in the middle and lower reaches, and the application of stainless steel seamless pipes and welded steel pipes accounts for about 2:1.
2. High‑pressure container industry: There is a huge demand for stainless steel pipes. The key application of this manufacturing industry is stainless steel straight seam welded pipes. Specifications and models include: 304 stainless steel, 321, 316 materials, 316L, 317L, etc., and the diameter is around 8‑Ø112 , the wall thickness is around 0.7mm‑3mm (usually a mid‑bottom pressure gas transmission pipe with a specification model of about Φ159mm), the actual main uses are: furnace body, raw material transmission pipeline, heat exchanger tube, etc.