Q245R grade steel is now the new brand of
20g steel, and the standard is: GB/ t713-2014. The letter Q stands for the first letter of qu in pinyin.The number 245 represents the minimum yield strength. The letter R is the first letter of "rong" pinyin in Chinese. Q245R has a special composition and performance, Q245R is mainly used for pressure vessel use, for the purpose, temperature, corrosion resistance of different, should choose the container plate quality, is not the same.
Q245R is mainly used in petroleum and petrochemical industry, chemical industry, boiler and pressure vessel manufacturing equipment manufacturing enterprise, is mainly used for making reactor, heat exchanger, separator, spherical tank, YouQiGuan, liquefied gas, nuclear reactor pressure vessel, liquefied oil gas bottle, spiral case, due to the petrochemical industry, coal, nuclear power, steam turbine cylinder, etc.
General heat treatment of Q245R boiler steel is hot rolling, controlled rolling, normalizing. The flaw detection has one, two, three, impact temperature has room temperature, 0°C,-20, if there is a special requirement to add Z15, Z25, Z35 and other Z performance test.
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