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 flexible channel steel supplied through agreement between the supply and demand parties are 6.5-30 #. Channel steel is mainly used in building structures, vehicle manufacturing, other industrial structures, and fixed cabinets, and is often used in conjunction with I-beams.
Channel steel belongs to carbon structural steel used for construction and machinery, and is a complex cross-section steel with a groove shape. Channel steel is mainly used in building structures, curtain wall engineering, mechanical equipment, and vehicle manufacturing. In use, it is required to have good welding, riveting performance, and comprehensive mechanical properties. The raw material for producing channel steel is carbon bonded steel or low alloy steel billets with a carbon content not exceeding 0.25%. The finished channel steel shall be delivered in the state of Hot working, normalization or hot rolling. Its specifications are expressed in millimeters of waist height (h) * leg width (b) * waist thickness (d), such as 100 * 48 * 5.3, which represents a channel steel with a waist height of 100 millimeters, a leg width of 48 millimeters, and a waist thickness of 5.3 millimeters, also known as 10 # channel steel. For channel steel with the same waist height, if there are several different leg widths and waist thicknesses, a b c should be added to the right of the model to distinguish them, such as 25 # a 25 # b 25 # c.
At the same height, lightweight channel steel has narrower legs, thinner waist, and lighter weight than regular channel steel. 18-40 are large channel steels, while 5-16 are medium channel steels. Mark the actual specifications, dimensions, and relevant standards of the incoming channel steel. The import and export ordering of channel steel is generally based on the specifications required during use after determining the corresponding carbon bonded steel (or low alloy steel) steel grade. Except for the specification number, channel steel does not have a specific composition or performance series.
The range sizing of steel is a measure to save materials. Range sizing refers to the delivery of goods within a certain size range of length or length multiplied by width, or from what to what. The production unit can produce and supply according to this size requirement.