Standard Classification and Use of Carbon Steel Elbow
Posted: 07/02/2020 05:27:59 Hits: 54
Carbon steel elbows are metal fittings that change the direction of carbon steel pipelines. The connection method includes screw and welding. According to the angle, there are three kinds of the most commonly used, 45°, 90°and 180°. In addition, according to the needs of the project, it also includes other abnormal angles such as 60°. The materials of the elbows are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics. The ways to connect with the pipe are: direct welding (the most common way) flange connection, hot melt connection, electric fusion connection, screw connection and socket connection. According to the production process, it can be divided into: welding elbow, stamping elbow, hot-pushed elbow, cast steel elbow, etc. Other names: 90 degree elbow, etc.
Classification:
Firstly, according to its radius of curvature, carbon steel elbows can be divided into long radius elbows and short radius elbows. The radius of curvature of the long radius elbow is 1.5 times the outer diameter of the pipe, that is, R=1.5D. The radius of curvature of the short radius elbow is equal to the outer diameter of the pipe, that is R=1.0D. (D is the diameter of the elbow, R is the radius of curvature. D can also be expressed in multiples.) If divided by pressure ratings, there are about 17 kinds, which are the same as the American pipe standards, including: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, among which the two most commonly used are STD and XS. According to the angle of the elbow, there are 45° elbow, 90° elbow and 180° elbow. And the implementing standards include GB/T12459-2005, GB/T13401-2005, GB/T10752-1995, HG/T21635-1987
D-GD0219, etc.
Scope of application:
Due to its good overall performance, the stamping elbow is widely used in foundation works such as chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, freezing, sanitation, plumbing, firefighting, power, aerospace, shipbuilding.
Classification:
Firstly, according to its radius of curvature, carbon steel elbows can be divided into long radius elbows and short radius elbows. The radius of curvature of the long radius elbow is 1.5 times the outer diameter of the pipe, that is, R=1.5D. The radius of curvature of the short radius elbow is equal to the outer diameter of the pipe, that is R=1.0D. (D is the diameter of the elbow, R is the radius of curvature. D can also be expressed in multiples.) If divided by pressure ratings, there are about 17 kinds, which are the same as the American pipe standards, including: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS, among which the two most commonly used are STD and XS. According to the angle of the elbow, there are 45° elbow, 90° elbow and 180° elbow. And the implementing standards include GB/T12459-2005, GB/T13401-2005, GB/T10752-1995, HG/T21635-1987
D-GD0219, etc.
Scope of application:
Due to its good overall performance, the stamping elbow is widely used in foundation works such as chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, freezing, sanitation, plumbing, firefighting, power, aerospace, shipbuilding.
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