|Alloy steel pipe||12Cr1MoVG
|∮8-1240*1-200||high temperature, low temperature and corrosion resistance in petrochemical electric boiler industry|
|Low temperature pipe||16MnDG, 10MnDG, 09DG
|∮8-1240*1-200||45 ~-195 low temperature pressure vessel pipe and low temperature heat exchanger pipe|
|High-pressure boiler tube||20G
|∮8-1240*1-200||heat pipe, collecting box and steam pipe of high pressure boiler|
|GB6479-2000||∮8-1240*1-200||chemical equipment and pipelines with working temperature of -40--400 and working pressure of 10-32mpa|
|GB3087-2008||∮8-1240*1-200||making low and medium pressure boiler and locomotive boiler|
|Delivery pipe||10#, 20#
ASTM A106A, B, C, A53A, B
|∮8-1240*1-200||General seamless steel tube suitable for conveying fluid|
|General structure tube||10#, 20#, 45#, 27SiMn
16Mn<Q345A, B, C, D, E>
|∮8-1240*1-200||Applicable to general structure, engineering support machining, etc|
Alloy pipe is a kind of seamless steel pipe. Alloy pipe can be divided into seamless pipe for structural use and high pressure heat-resistant Alloy pipe. Different from the production standard and industry of alloy tubes, the mechanical properties of the tubes are changed by annealing and tempering. Achieve the required processing conditions. Its performance is higher than that of the general seamless steel tube, the chemical composition of the alloy tube contains more Cr, high temperature resistance, low temperature resistance, corrosion resistance.There is no alloy composition or few alloy composition in general carbon seamless tube. The reason why the alloy tube is widely used in petroleum, aerospace, chemical industry, electric power, boiler, military industry and other industries is that the mechanical properties of the alloy tube change well and adjust well.
Alloy pipe is mainly used for heating surface pipe of low and medium pressure boiler (working pressure is generally no more than 5.88mpa, working temperature is below 450℃); Used for heating surface pipes, economizers, superheaters, reheaters and pipes for petrochemical industry of high pressure boilers (working pressure is generally above 9.8mpa and working temperature is between 450℃~650℃).
Alloy steel tube is mainly used in power plant, nuclear power plant, high pressure boiler, high temperature superheater, reheater and other high pressure and high temperature pipelines and equipment, it is made of high quality carbon steel, alloy structural steel and stainless heat-resistant steel, after hot rolling (extrusion, expansion) or cold rolling (drawing).
It can be 100% recycled, in line with the national strategy of environmental protection, energy conservation and resource conservation. The national policy encourages the expansion of the application field of high pressure alloy pipe.In China, the proportion of alloy pipe consumption in the total steel volume is only half of that in developed countries. The expansion of alloy pipe application field provides a broader space for the development of the industry.According to the research of the expert group of alloy pipe branch of China Special Steel Association, the demand for high pressure alloy pipe in China will increase by 10-12% annually in the future.