Introduction:
Angle steel can be composed of various stressed components according to the different needs of the structure, and can also be used as connectors between components. It is widely used in various building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power pipelines, busbar supports, warehouse shelves, etc. Angle steel is a kind of simple carbon structural steel for building, which is mainly used for metal components and the frame of factory buildings. Good weldability, plastic deformation performance and certain mechanical strength are required when using. The billet for producing angle steel is a low-carbon square billet, and the finished angle steel leaves the factory in hot-rolled forming, normalizing or hot-rolled state.
Angle iron specification standard:
Mainly divided into equilateral angle steel and unequal angle steel, among which unequal angle steel can be divided into unequal thickness and unequal thickness. The specifications of angle steel are expressed by the dimensions of side length and side thickness. At present, the specification of angle steel in China is 2-20, with the number of centimeters of side length as the number. The same angle steel often has 2-7 different side thicknesses. Imported angle steel shall be marked with actual size, side thickness and relevant standards on both sides. Generally, the angle steel whose side length is longer than 12.5cm is large, the angle steel whose side length is 12.5cm-5cm is medium, and the angle steel whose side length is less than 5cm is small. The order of import and export angle steel is generally based on the specifications required in use, and its steel grade is the corresponding carbon steel grade. That is to say, angle steel has no specific composition and performance series except specification number.
The delivery length of angle steel can be divided into fixed length and double length. According to different specifications, the selection range of domestic angle steel is 3-9m, 4- 12m, 4- 19m and 6- 19m. The selection range of Japanese angle steel length is 6- 15m. The section height of unequal angle steel is calculated according to the width of the long side of unequal angle steel. Refers to the steel with angular cross section and unequal lengths on both sides. This is a kind of angle steel. Its side length ranges from 25mm× 16mm to 200mm× 125mm.
GB/T 2 10 1-89 (general provisions on acceptance, packaging, marking and quality certificate of section steel); GB 9787-88/GB 9788-88 (Size, shape, weight and allowable deviation of hot-rolled equilateral/unequal angle steel); JISG3 192—94-94 (Shape, size, weight and allowable deviation of hot rolled steel); DIN 17 100-80 (quality standard for common structural steel);
The above is what Bian Xiao introduced to you, that is, a brief introduction to the specifications and standards of angle steel. Then angle steel plays a very important role for our builders and suppliers. In all kinds of building structures and engineering structures, such as bridges, such as our ships and industrial steelmaking furnaces, they are indispensable, so they play a very key role. Don't underestimate everyone!
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