The main use of stainless steel is the exhaust system, which accounts for more than 1/2 of the total amount of stainless steel used in automobiles, and 80% is ferritic stainless steel. Exhaust gas from automobile engines exits the muffler through exhaust gas inlet pipes, front pipes, hoses, converters, and central pipes. Exhaust system commonly used steel types are 409L, 436L and so on. Automotive mufflers mainly use stainless steel welded pipes. According to estimates, the stainless steel pipe used in automobiles accounts for about 1.5% of the total downstream stainless steel pipe usage, and the stainless steel seamless pipe and welded pipe use ratio is about 2: 1.
Petrochemical industry includes chemical fertilizer industry
There is a huge demand for stainless steel pipes. The industry mainly uses stainless steel seamless pipes. The specifications include: 304, 321, 316, 316L, 347, 317L, etc., the outer diameter is about ¡é 18- ¡é 610, and the wall thickness is 6mm-50mm Left and right (usually selected medium and low pressure transmission pipes with a size above ¦µ159mm), the specific application fields are: furnace tubes, material conveying tubes, heat exchanger tubes, etc.
Water and gas transportation
Stainless steel pipes and their water conveying equipment are the most advanced basic water purification materials in the world today, and their anti-corrosive properties are strong. Cast iron pipes, carbon steel pipes, plastic pipes, etc. cannot be compared with them.
The best materials for water industry such as water preparation, storage, transportation, purification, regeneration, desalination, etc. The annual demand is about 25,000 tons.
Equipment manufacturing and maintenance
The annual consumption of stainless steel pipes is more than 20,000 tons. Such industries mainly use sanitary or antibacterial stainless steel pipes. Sanitary seamless pipe made of imported SUS304, 316L can meet the special requirements of various media in the food and biopharmaceutical fields. Antibacterial stainless steel has the advantages of stainless steel and good antibacterial performance. The demand in the fields of kitchen equipment, food industry workbenches and utensils, medical equipment, tableware and towel racks in daily life, and brackets for refrigerators is increasing.