About the application of nickel-based alloy pipes
1. Automobile industry
Stainless steel is mainly used in the exhaust system, accounting for more than 1/2 of the total amount of stainless steel used in automobiles, and 80% is ferritic stainless steel. The exhaust gas generated by the automobile engine flows out of the muffler through the exhaust gas inlet, front pipe, hose, converter, and center pipe. Common steel grades in the exhaust system are 409L, 436L, etc. Automobile mufflers mainly use stainless steel welded pipes. It is estimated that the stainless steel pipes used in automobiles account for about 1.5% of the entire downstream use of stainless steel pipes, and the use ratio of stainless steel seamless pipes and welded pipes is about 2:1.
2. Petrochemical industry including fertilizer industry
There is a great demand for nickel-based alloy pipes. The industry mainly uses stainless steel seamless pipes, with specifications including: 304, 321, 316, 316L, 347, 317L, etc., with diameters of ￠18-￠610 and thicknesses of 6mm-50mm (generally, medium and low pressure pipelines with specifications above Φ159mm are selected). The specific application areas are: furnace pipes, material conveying pipes, heat exchanger pipes, etc.
3. Fluid transportation such as water and gas
Stainless steel pipes and their water-passing equipment are good basic water purification materials with strong corrosion resistance. Cast iron pipes, carbon steel pipes, plastic pipes, etc. cannot compare with them.
Material selection for water industry such as water preparation, storage, transportation, purification, regeneration, and seawater desalination. The annual demand is about 25,000 tons.
4. Equipment manufacturing and maintenance
The annual consumption of stainless steel pipes is more than 20,000 tons. This industry mainly uses sanitary or antibacterial grade stainless steel pipes. The hygienic seamless pipes made of imported SUS304 and 316L can meet the special requirements of various media in the fields of food and biomedicine. Antibacterial stainless steel has the advantages of stainless steel and good antibacterial properties. The demand for it in the fields of kitchen equipment, food industry operating tables and containers, medical equipment, tableware and towel racks in daily life, and refrigerator brackets is increasing.
