What's the difference between channel type 25a#, 25b# and 25c#?
Because the channel steel is a cross section steel strip with groove shape. Its specifications, such as a*b*c (here, a, B, C, only letters, no other meaning and letters), a means waist height of a mm, leg width of B mm, waist thickness of C mm channel. For example: channel type 25a#, specifications for 250*78*7, which means waist height (a) is 250mm, leg width (b) 78mm, waist thickness (c) 7mm
Channel type 25a#, 25b#, 25c# is to indicate "waist height of the same" channel, but its leg width and waist thickness is different, so you need to add a, B, C to the right of the model to be distinguished. For example, 25a# means 250*78*7. 25b# stands for 250*80*9.
Channel steel is a strip of steel with a cross section. The specifications of the method, such as 120*53*5, mean waist height of 120 mm, leg width of 53 mm channel, waist thickness of 5 mm channel, or called 12# channel. The same height of the channel, if there are several different leg width and waist thickness, also need to add a, B, C on the right side of the model, such as 25a#, 25b#, 25c# and so on. Channel steel is divided into ordinary channel steel and light channel steel. Standard Specification for hot-rolled plain channel steel is 5-40#. Specifications for hot rolled flexible channel steel supplied by supply and demand agreement are 6.5-30#. Channel steel is mainly used in building structures, vehicle manufacturing and other industrial structures, and channel steel is often used in conjunction with i-beam.
