Application fields of stainless steel pipes
Key urban landscape and decoration projects in areas where stainless steel welded pipes are used: In light industry, pharmaceuticals, paper making, sewage treatment, water supply, machinery, and other fields, there is also a considerable proportion: in chemical, fertilizer, petrochemical, and other industries, it is generally the choice of low pressure pipelines with specifications Φ 159 mm or more.
Key urban landscape and decoration projects in areas where stainless steel welded pipes are used:
In light industry, pharmaceuticals, paper making, sewage treatment, water supply, machinery, and other fields, there is also a considerable proportion: in chemical, fertilizer, petrochemical, and other industries, it is generally the choice of low pressure pipelines with specifications Φ 159 mm or more.
Stainless steel welded pipes are also used for automobile silencers
Stainless steel seamless pipes are mainly used in "three" (chemical industry, fertilizer, chemical fiber, petroleum, electric power, boiler, machinery, aerospace, nuclear energy industry, national defense industry, and other fields).
Stainless steel pipes for petroleum drilling
After the 1990s, China's oil well tubing production capacity has increased year by year, with exports exceeding imports and becoming self-sufficient? 90。
However, most varieties such as J55 steel grade and songs to mobile phones have only a small number of API high-quality steel pipes.
Currently, oil fields require high strength and high carbon dioxide, Cl - corrosion resistance, high API Q125, C95 collapse, crushing, features L80-2 (13 cr) steel grade and special types of threads and API standards in cold regions, such as the use of oil well tubing that has not yet achieved industrial production.
With the development of the petroleum industry, more and more strict technical requirements have proposed oil well tubing, high-performance tubing, and the use of new material technology development trends.
Stainless steel nonmagnetic drill collars, high CO, CO2, Cl - ultra ferritic stainless steel corrosion Cr13, Cr25 oil casings are used for oilfield drilling. According to preliminary statistics, the current annual demand is more than 10000 tons, and after 3-5 years, it will be about 4-50000 tons per year.
Most and stainless steel pipes still rely on imports
During the "11th Five Year Plan" period of stainless steel for thermal power boiler tubes, new thermal power plants reached 180 million kilowatts, with an annual output of about 40 million kilowatts (600000 kilowatts or more) and supercritical units? 50 or more (more using heat resistant austenitic stainless steel boiler tubes).
Over 1600000 kW supercritical thermal power unit boilers require 200 to 500 tons of heat-resistant stainless steel tubes, so according to the demand development plan, more than 50000 tons of heat-resistant stainless steel tubes are required annually.
The four major domestic boiler plants with 600000 kW subcritical and supercritical units, as well as maintenance and heat resistant stainless steel pipes for new power plants, tend to choose domestic suppliers. In addition, the consumption of heat-resistant stainless steel pipes for new and repaired thermal power boilers in China is about 12000 tons per year, mainly involving three steel grades TP304H, TP347H, and TP321H. The representative specifications include an outer diameter of 38 to 4 to 10 millimeters, 76 millimeters, wall thickness, and a length of no more than 10 meters.
Therefore, heat resistant stainless steel tubes for thermal power boilers are worth developing. As supercritical units improve their resistance to high temperature, high pressure, and high power station boiler tubes, the demand for TP347HFC, cr18ni Super304H (1-9 cu3n), and TP310HCbN cr25ni20nbn (1) will increase.
Currently, this type of stainless steel pipe is entirely imported.
"Three" industrial heat-resistant stainless steel pipe
Heat-resistant stainless steel pipes are mainly used in industrial "three" heat transfer and fluid transportation, with a market capacity and the largest domestic market of about 160000 tons per year. Users' steel pipes of this type are very high and strict, relying mainly on imports.
The potential market is for large diameter oil cracking furnace tubes and tubes at low temperatures. Due to their special heat and corrosion resistance requirements, equipment installation and maintenance are inconvenient, requiring a long service life of the equipment. Therefore, it is necessary to optimize material composition control and special heat treatment tube mechanical and operational performance. Another potential market for phosphate (urea) specialty steel pipes in the fertilizer industry is the 316 re 69 logging method and 2.
Nowadays, stainless steel pipes are basically imported. Foshan Zhi Royal Stainless Steel Material Co., Ltd. is a Taiwan Zhang Wei Steel Machinery Co., Ltd.
The large investment enterprise is located on the first ring road of Chencun Town, Shunde District, Foshan City, with convenient transportation. Specializing in the production of stainless steel mechanical construction, architectural decoration stainless steel pipes, industrial stainless steel pipes, food hygiene and stainless steel pipe heat exchangers, boilers, stainless steel pipes, stainless steel plates for domestic drinking water, industrial stainless steel plates, decorative stainless steel plates, not all types of stainless steel profiles and other products. The product conforms to Chinese GB, American ASTM, Japanese JIS, etc.