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Stainless Steel Pipe Application Requirements

[May 8,2019]

Auto industry
The main use of stainless steel is the exhaust system, which accounts for more than 1/2 of the total amount of automotive stainless steel, 80% of which is ferritic stainless steel. The exhaust gas generated by the automobile engine finally flows out of the muffler through the exhaust gas intake pipe, the front pipe, the hose, the converter, and the center pipe. The exhaust steel system commonly used steel grades are 409L, 436L and so on. Automotive mufflers mainly use stainless steel welded pipes. It is estimated that the stainless steel pipe used in automobiles accounts for about 1.5% of the total amount of stainless steel pipe downstream, while the ratio of stainless steel seamless pipe and welded pipe is about 2:1.

Petrochemical industry including fertilizer industry
The demand for stainless steel pipes is extremely large. The industry mainly uses stainless steel seamless pipes. The specifications include: 304, 321, 316, 316L, 347, 317L, etc., the outer diameter is around ¢18-¢610, and the wall thickness is 6mm-50mm. Left and right (generally the medium and low pressure conveying pipes with specifications above Φ159mm), the specific application fields are: furnace tubes, material conveying pipes, heat exchanger tubes, etc.

Fluid transport such as water and gas
Stainless steel pipes and water delivery equipment are the most advanced basic water purification materials in the world. They have strong corrosion resistance, and can not be compared with cast iron pipes, carbon steel pipes and plastic pipes. The best choice for water industry such as water preparation, storage, transportation, purification, regeneration, and seawater desalination. The annual demand is about 25,000 tons.

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