Galvanized channel steel channel sub-normal channel and light. General specifications for hot-rolled channel 5-40 #. Agreement by both supply and demand supply of hot alternative channel specifications 6.5-30 #. Channel is mainly used for building structure, vehicle manufacturers and other industrial structures, channels and beams often used in conjunction. Channel can be divided into four kinds according to the shape: Cold equilateral channels, ranging from cold side channel, the crimping channel cold, cold-formed steel outer edge channel in accordance with the theory, it should be is the channel flange force, that channel should be standing, not the tummy.