Application of Stainless Steel Pipe

Key urban landscape and decoration projects in areas where stainless steel welded pipes are used:

In light industry, pharmacy, papermaking, sewage treatment, water supply, machinery and other fields, there is also a considerable proportion: in chemical, fertilizer, petrochemical and other industries, low-pressure pipelines with specifications above Φ159mm are generally selected.

Car mufflers also use stainless steel welded pipes

Stainless steel seamless pipes are mainly used in the “three” (chemical, fertilizer, chemical fiber, petroleum, electric power, boilers, machinery, aerospace, nuclear energy industry, national defense industry and other fields.

Stainless steel pipe for petroleum drilling

Since the 1990s, China’s oil well pipe production capacity has increased year by year, with exports exceeding imports, making it self-sufficient by 90%.

But most varieties such as J55 steel grade and song to the mobile phone, only a small amount of API high-quality steel pipe.

At present, oil fields require high strength and high carbon dioxide, Cl-corrosion resistance, high APIQ125 C95 collapse, breakage, characteristic L80-2 (13 cr) steel grade and special types of threads and API standards and cold areas, such as the use of oil well pipes Industrial production has not yet been realized.

In the development of the petroleum industry, more and more stringent technical requirements have put forward oil well pipes, high-performance pipes and the use of new material technology development trends.

Stainless steel non-magnetic drill collars, high CO, CO2, Cl-super ferritic stainless steel corroded Cr13, Cr25 oil casing for oilfield drilling, according to preliminary statistics, the current annual demand is more than 10,000 tons, and after 3 to 5 years, about 4 to 50,000 tons Per year.

Most and stainless steel pipes still rely on imports

During the “Eleventh Five-Year Plan” period for the stainless steel of thermal power generation boiler tubes, the new thermal power generation is 180 million kilowatts, about 40 million kilowatts (units above 600,000 kilowatts), supercritical units? 50 or more (using heat-resistant austenitic stainless steel More boiler tubes).

Over 1 600,000 kilowatts of supercritical thermal power unit boilers require 200 to 500 tons of heat-resistant stainless steel pipes. Therefore, according to the development plan, more than 50,000 tons of heat-resistant stainless steel pipes per year are planned.

The 600,000 kilowatt subcritical and supercritical units of the four major domestic boiler plants, as well as the maintenance and heat-resistant stainless steel pipes of new power plants, tend to choose domestic suppliers. In addition, the amount of heat-resistant stainless steel pipes used for new and repaired thermal power boilers in China is about 12,000 tons per year, focusing on three steel grades TP304H, TP347H, and TP321H. More than 10 meters.

Therefore, heat-resistant stainless steel pipes for thermal power boilers are worthy of development. With the increase of supercritical units to withstand high temperature, high pressure, high power station boiler tubes TP347HFC, cr18ni Super304H (1-9 cu3n), TP310HCbN cr25ni20nbn (1) demand will increase.

At present, all stainless steel pipes of this kind rely on imports.

“Three” industrial heat-resistant stainless steel pipe

heat-resistant stainless steel pipes are mainly used in the industrial “three” heat transfer and fluid transportation, the market capacity, the largest domestic market is about 160,000 tons per year. The user’s steel pipe is very high and very strict, and the key is to rely on imports.

The potential market is large-diameter oil cracking furnace tubes and tubes at low temperatures. Due to their special heat-resistant and corrosion-resistant requirements, equipment installation and maintenance are inconvenient, and equipment is required to have a long service life cycle. It is necessary to optimize material composition control and special heat treatment tube machinery. Performance and operational performance. Another potential market in the chemical fertilizer industry, phosphate fertilizer (urea) special steel pipe, the key steel type is 316 re69 logging method and 2.

The current stainless steel pipes basically rely on imports. Foshan Zhi Royal Stainless Steel Material Co., Ltd. is a Taiwan Zhangwei Steel Machinery Co., Ltd.

invested in large-scale enterprises, located in the first ring road of Chencun Town, Shunde District, Foshan City. Specializing in the production of stainless steel mechanical construction, architectural decoration stainless steel pipes, industrial stainless steel pipes, food sanitation pipes, and stainless steel pipe heat exchangers, boilers, stainless steel pipes, stainless steel plates, domestic drinking water, industrial stainless steel plates, and decorative stainless steel plates. All types of stainless steel profiles and other products. Products comply with Chinese GB, American ASTM, Japanese JIS, etc.

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