Classification and introduction of channel steel

Classification and introduction of channel steel

Channel steel is divided into ordinary channel steel and light channel steel. The specification of hot-rolled ordinary channel steel is 5-40#. The specification of hot-rolled flexible channel steel supplied through agreement between the supplier and the buyer is 6.5-30#. Channel steel is mainly used in building structure, vehicle manufacturing, other industrial structures and fixed panels and cabinets. Channel steel is often used together with I-beam.

Channel steel can be divided into four types according to shape: cold-formed equal edge channel steel, cold-formed unequal edge channel steel, cold-formed inner crimping channel steel and cold-formed outer crimping channel steel.

According to the theory of steel structure, it should be the force on the wing plate of channel steel, that is to say, the channel steel should be standing instead of lying on its stomach.

number

① International chemical element symbols and national symbols are used to represent chemical components, and Arabic letters are used to represent component content:

For example: China, Russia 12CrNi3A

② Use fixed digit numbers to represent steel series or numbers; Such as: the United States, Japan, 300 series, 400 series, 200 series;

③ The serial number is composed of Latin letters and order, which only indicates the purpose.

Specification setting

The specifications of channel steel are mainly expressed by the dimensions such as height (H), leg width (b) and waist thickness (d). The specifications of domestic channel steel are from 5 to 40, that is, the corresponding height is 5 to 40 cm.

At the same height, light channel steel has narrower legs, thinner waist and lighter weight than ordinary channel steel. Medium channel steel is - 16 and - 5. Imported channel steel shall be marked with actual specifications, dimensions and relevant standards. The import and export order of channel steel is generally based on the specifications required in use after determining the corresponding steel grade of carbon structure steel (or low alloy steel). Except for the specification number, channel steel has no specific composition and performance series.

The delivery length of channel steel can be divided into fixed length and double length, and the allowable difference shall be specified in the corresponding standards. The length selection range of domestic channel steel is divided into 5 - 12M, 5 - 19m and 6 - 19m according to different specification numbers. The length selection range of imported channel steel is generally 6 - 15m.