What is the concept of nonstandard channel steel compared with the national standard channel steel? Is there any difference in size between the national standard channel steel and the material?
Channel steel is a strip of steel with a cross section. Its specifications are h, * leg width (b) * waist thickness (d) mm number, such as 100*48*5.3, which means waist height of 100 mm, leg width of 48 mm channel, waist thickness of 5.3 mm channel, or 10# channel steel. 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 to distinguish, such as 32a#, 32b#, 32c# and so on.
Non-standard channel steel, with channel steel waist height, leg width, waist thickness and per meter weight as the standard, non-standard channel steel, mainly in order to not affect the safety quality of the premise of cost saving, in high, wide and thick discount. For example, 12# channel weight per meter 6 meters for 12.059kg, 72.354kg, and 12# 6 if a channel is 48kg, then we call it under 33.3% (1-48/72.354). In our country, most of the steel market has sales of non-standard profiles, this is called "cut foot".
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 6.5-40#. 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.
