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Magnetic material classification in China

There are more than 2,300 magnetic materials produced in three countries. There are several types of magnetic material products available, more than 3,500 varieties and more than 40,000 specifications.

(1) Magnetic materials for urban construction: Urban construction systems generally use low-voltage magnetic materials and are currently developing toward environmental protection and energy conservation. Environmental-friendly rubber sheet valves, balance valves, and midline butterfly valves and metal sealing butterfly valves are gradually replacing low-pressure iron gate valves. Magnetic materials used in domestic urban construction are mostly balanced valves, soft-sealed gate valves, and butterfly valves.

(2) Magnetic materials for urban heating: In the urban heat generation system, a large number of metal-sealed butterfly valves, horizontal balance valves, and buried ball valves are needed. This type of valve solves the problems of vertical and horizontal hydraulic imbalances of the pipeline and achieves energy conservation. The purpose of thermal balance.

(3) Magnetic materials for environmental protection: In the domestic environmental protection system, the water supply system mainly needs the midline butterfly valve, the soft seal gate valve, the ball valve, and the exhaust valve (used to exclude the air in the pipeline). Sewage treatment systems mainly require soft-sealed gate valves and butterfly valves.

(4) Magnetic materials for city gas: City gas accounts for 22% of the whole natural market, and the amount of magnetic material is large, and its types are also numerous. The main need for ball valves, plug valves, pressure relief valves, safety valves.

(5) Magnetic materials for long-distance pipelines: Long-distance pipelines are mainly crude oil, finished products, and natural pipelines. The majority of magnetic materials required for such pipelines are forged steel three-body full-diameter ball valves, sulfur-resistant flat gate valves, safety valves, and check valves.

(6) Magnetic materials used in petrochemical plants: a. Oil refining equipment. Most of the magnetic materials used in oil refinery equipment are pipeline magnetic materials, mainly gate valves, globe valves, check valves, safety valves, ball valves, butterfly valves, and traps. Gate valve demand accounts for about 80% of the total magnetic material, (magnetic materials account for 3% to 5% of the total investment in the device). b. Chemical fiber equipment, chemical fiber products are mainly polyester, acrylic, vinylon three major categories. The magnetic material ball valve and jacket valve (jacketed ball valve, jacketed gate valve and jacketed globe valve) are needed. c, propylene clear device. The device generally requires the magnetic material produced by api standard, which is mainly gate valve, globe valve, check valve, ball valve, trap valve, needle valve, and plug valve. Among them, the gate valve accounts for about 75% of the total amount of magnetic materials. d, ammonia equipment. Due to the difference in the synthesis of ammonia and purification methods, and the different technological processes, the technical properties of the required magnetic materials are also different. At present, domestic ammonia plants mainly use gate valves, globe valves, check valves, traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves, and high-temperature and low-temperature valves.

Among them, the cut-off valve occupies 53.4% of the total data for the valve of the device, the gate valve accounts for 25.1%, the steam trap accounts for 7.7%, the safety valve accounts for 2.4%, the control valve and the off-temperature valve and others account for 11.4%.e, the ethylene device, the ethylene device It is the leading device of petrochemical industry. It requires a wide variety of magnetic materials.

Gate valves, globe valves, check valves, and lifter ball valves account for the majority of them, among which the gate valves must be ranked first. In the “Tenth Five-Year Plan”, six sets of ethylene plants with an annual output of 660,000 tons are needed in the country, and the demand for magnetic materials is considerable. In addition, large-scale ethylene and high-pressure polyethylene devices also require ultra-high temperature, low temperature and ultra-high pressure magnetic material products. f. Air separation device. "Air separation" means air separation. The device mainly needs stop valves, safety valves, check valves, regulating valves, ball valves, butterfly valves and cryogenic valves. g, polypropylene device, polypropylene is easy to use propylene as raw material, polymer compound made of polymer, the device mainly requires gate valve, globe valve, check valve, needle valve, ball valve, trap.

(7) Magnetic material for power station: The construction of power station in China is developing in a large scale, so large-diameter and high-pressure safety valves, pressure reducing valves, globe valves, gate valves, butterfly valves, emergency shut-off valves and flow control valves, spherical surfaces are required. Sealed instrument cut-off valve (according to the National "Tenth Five-Year Plan", with the exception of Inner Mongolia and Guizhou provinces that can build more than 200,000 kilowatts of units, other provinces and cities can only build units with more than 300,000 kilowatts).

(8) Magnetic materials for metallurgy: The alumina behavior in the metallurgical industry mainly requires the use of a wear-resistant slurry valve (in a flow stop valve) and an adjustment of the trap. The steel-making industry mainly needs to use metal sealed ball valves, butterfly valves and oxidation ball valves, stop flashes and four-way reversing valves.

(9) Marine magnetic materials: With the development of offshore oilfields, the amount of magnetic materials required for oceanic flat hair has gradually increased. Marine platforms need to shut off ball valves, check valves, and multi-way valves.

(10) Magnetic materials for food and medicine: The industry mainly needs stainless steel ball valves, non-toxic plastic ball valves and butterfly valves.

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