20 g high pressure boiler tube is one of the boiler tube, belonging to the seamless steel tube category. Manufacturing methods and seamless tube are t...
20 g high pressure boiler tube is one of the boiler tube, belonging to the seamless steel tube category. Manufacturing methods and seamless tube are the same, but have strict request for manufacturing steel used in the steel pipe. Often when using 20 g high pressure boiler tube in high temperature and high pressure conditions, the pipe under the action of high temperature flue gas and water vapor, oxidation and corrosion will happen. Requirements of steel pipe with high rupture strength, high oxidation corrosion resistance, and have good organizational stability. High pressure boiler tube is mainly used to manufacture high-pressure and ultrahigh-pressure boiler superheater tubes, reheater tube, airway, such as main steam pipe.
20 g steel used in high pressure boiler tube used in boiler pressure parts, generally under 39 kg boiler applications, in order to use under high pressure, tend to the heating surface tube design is very thick. In order to reduce the thermal resistance and save steel, guarantee the security of high or high pressure boiler steel, at the same time in order to reduce the amount of steel, 16 MNG is widely accepted. At the same time also have added rare earths and magnesium and other metal and non-metallic materials of special steel. This will improve the performance of the boiler steel to reduce the consumption of steel, but also reduces the thermal resistance.
Alien seamless steel tube is in addition to the outside of the pipe cross section shape of the floorboard of the seamless steel tube. According to the size of steel pipe cross section shape is different and can be divided into such as wall thickness seamless steel tube (code-named D), ranging from wall thickness seamless steel tube (code-named BD), variable diameter seamless steel tube (code-named BJ). Alien seamless steel tube is widely used in all kinds of parts, tools and machinery parts. Compared with those of circular tube section tube usually have large moment of inertia and section modulus, have bigger bending torsional capacity, can greatly reduce the structure weight, save steel.
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