Alloy steel tube Features: good oxidation resistance, corrosion resistance and tissue stability. Jechiang has high performance and good process performance.

Alloy steel pipe application: High temperature sulfur corrosion, Alloy Steel Pipe and Tube high temperature hydrogen and hydrogen sulfide corrosion, organic acid corrosion.

In the use of the state of ferrite-dominated alloy steel pipe. Chromium content in the $number, with body-centered cubic crystal structure. Alloy Steel Pipe and Tube This kind of steel generally does not contain nickel, sometimes also contains a small amount of Mo, Ti, NB Wait until the elements, this type of steel with large thermal conductivity, small expansion coefficient, good oxidation resistance, excellent resistance to corrosion and other characteristics, more for the production of atmospheric, water vapor, and oxidizing acid corrosion of the components.

Alloy steel tubes are often used in key parts of refinery chemical plants, for example, the various types of furnace tubes, including atmospheric and vacuum furnace tubes, coking furnace tubes, Alloy Steel Pipe and Tube hydrofining furnace tubes, and so on; the process piping of the refinery, including the normal pressure, the oil transfer line of the coking plant, the pipe of the high temperature and so on. This type of alloy steel pipe production technology requirements are relatively high, domestic manufacturers are also relatively small, and alloy steel pipe usually require large-scale production, this and the actual requirements of the variety specifications, Alloy Steel Pipe and Tube a small number of cases often occur contradictions, often lead to long lead time, procurement difficulty is very large, The purchase of alloy steel pipe is often the key factor that affects the whole and maintenance of the petrochemical construction project.

The main use of alloy steel tubes is for power plants, nuclear power, pressure cooker, high-temperature superheater and reheater, such as high-pressure high temperature piping and equipment, it is the use of high-quality carbon steel, alloy structural steel and stainless steel to do the material, by hot-rolled (extrusion, expansion) or cold-rolled (pull). The alloy tube is mainly used in the low medium pressure boiler (the working pressure is not less than 5.) 88Mpa, working temperature under 450 鈩 of the heating surface pipe; Alloy Steel Pipe and Tube for high-pressure boilers (working pressure in general 9.8Mpa above, working temperature between 450鈩儈650鈩) of the heating surface pipe, economizer, superheater, Reheater, Petrochemical industry pipe and so on.

Alloy Steel pipe Use:

In petrochemical plant, heating furnace often use cr5mo material as furnace tube, cr5mo hardness after a certain time running, the hardness is generally hrc48----52: average carbon content: 鈮 0.15%, chromium content: 4.00~6.00%, Molybdenum content: 0.45~0.60%. Alloy Steel Pipe and Tube Heat treatment-annealing mechanical properties (not less than): Tensile strength (蟽^b)--390mpa yield Point (蟽^s)--185mpa elongation (未^5)--22% high temperature strength (蟽^d, 10^5h) 27MPa