A groove-shaped channel cross-section is elongated steel. Channel is constructed of carbon steel and machinery, is a complex section of the beam steel, its cross-sectional shape of the groove. Channel is mainly used for building structures, curtain wall engineering, manufacturing machinery, equipment and vehicles. In use are required to have good welding, riveting performance and mechanical properties. Category: Common channel and sub-channel light channel. Hot-rolled channel steel specifications for 5-56 #. Purpose: The main channel for building structures, vehicle manufacturing, other industrial structures and fixed disk counters, and beam channel also often used in conjunction. Appearance quality: at the same height, light channel narrower than the common channel of the legs, waist thin, light weight. 18-56 large channel number, channel number 5-16 for medium channel. . Surface quality and channel geometry tolerances specific provisions in the standard. There shall be no general requirement to spend harmful surface defects may not have a significant twist, bend the provisions of channel waves (camber) the allowed values ??of the parameters and specifications channel surface shape (h, b, d, t, etc.) values, tolerance values. Channel geometry incorrect main manifestations are: angle, legs extended and legs and so on. The main origin: Our channel is mainly produced by Shougang Steel, Laiwu Steel, Wuhan Iron and Steel, Maanshan Iron and Steel, the new steel, Ping Steel, Jinan Steel, Nippon Steel, several mills. Detailed consultation 186 1164 3314 QQ 2748 5911