Channel is a cross-section of the groove-shaped steel bar. Channel sub-normal channel and light channel. Common specifications for hot-rolled channel 5-40 #. Channel production process in four steps: 1, blank → 2, extended pass system → 3, finishing pass system → 4, finished. Mainly used for building construction, vehicle manufacturing and other industrial structure of hot-rolled steel channel, and the channel is also often used in conjunction with the I-beam. Its specifications representation on the 18th channel, such as 120 * 53 * 5, said the channel waist height 120 mm, width 53 mm legs, waist channel thickness of 5 mm stainless steel channel, otherwise known as 12 # channel. Surface quality of cold-formed channel equilateral requirements are as follows: 1, the surface may not have bubbles, cracks, scarring, folding, inclusion and face layered, allowing no more than 10% of the nominal thickness slight pits, bumps , indentation, hairline, abrasions and pressed into the oxide scale; 2, surface defects by grinding method allows to clean up, but cleaning up the depth shall not exceed 10% of the nominal thickness; 3, cold-formed welded hollow steel welds may not have open welding, lap welding, burn and severe dislocation; 4, the outer burr welds should be cleared within the burr weld can not be cleared. Hefei channel _ _ galvanized channel commerce channel Chin Bo wholesale prices offered by the Hefei Show Bo Trading Company. Hefei Show Bo Trading Company (www.hfzhanbo.com) strong, credible, in Hefei, Anhui steel industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement will lead the development of innovative ideas and you work Bo Trading into the brilliant, for a better future!