Channel steel is divided into ordinary channel steel and light channel steel. The specifications of hot-rolled ordinary channel steel are 5-40#. The specifications of hot-rolled modified channel steel supplied by agreement between the supplier and the buyer are 6.5-30#. Channel steel is mainly used in building structures, vehicle manufacturing, other industrial structures and fixed panels. Channel steel is often used in conjunction with I-beams.
Channel steel can be divided into 4 types according to shape: cold-formed equal-edge channel steel, cold-formed unequal-edge channel steel, cold-formed inner curled channel steel, and cold-formed outer curled channel steel. According to the theory of steel structure, the channel steel wing plate should bear the force, which means that the channel steel should be standing up instead of lying down.
Channel steel specifications:
The specifications of channel steel are mainly expressed by height (h), leg width (b), waist thickness (d) and other dimensions. The current domestic channel steel specifications range from No. 5 to 40, that is, the corresponding height is 5 to 40cm.
At the same height, light channel steel has narrower legs, thinner waist and lighter weight than ordinary channel steel. No. 18-40 are large channel steels, and No. 5-16 channel steels are medium-sized channel steels. Imported channel steel is marked with actual specifications, dimensions and related standards. The import and export orders of channel steel are generally based on the specifications required for use after determining the corresponding carbon steel (or low alloy steel) steel grade. Apart from specification numbers, channel steel does not have a specific composition and performance series.
The delivery length of channel steel is divided into two types: fixed length and double length, and the tolerance value is specified in the corresponding standard. The length selection range of domestic channel steel is divided into three types: 5-12m, 5-19m, and 6-19m according to different specifications. The length selection range of imported channel steel is generally 6-15m.
