Hot-rolled channel average leg thickness to allow deviation of ± 0.06t, bend deflection should not exceed 0.15d stainless steel channel, channel slope of the outer edge of the leg, one leg in the Great 1.5% b, legs and not more than 2.5 % b channel price, leg side, shoulder passivation can not make a diameter equal to the rod by 0.18t; the channel curvature per meter of not more than 3mm, total curvature is not greater than 0.3% of the total length, and no obvious twist . Several points channel size inspection method is as follows: 1. Check the height to the height of the waist prevail, checks shall be exempt from the waist wide leg uneven impact of channel models, check bend deflection measurement channel with a ruler and a feeler gauge, check channel leg side, shoulder passivation measuring rod model and can not make a round bar diameter is equal to 0.18t measured by passivating the site. Channel surface quality and geometry tolerances have specified in the standard. General requirements There shall be no surface defects harmful to spend, do not have a significant twist, the provisions channel waves bend (camber) allowed values ??and specifications channel surface shape parameters (h, b, d, t, etc.) values, tolerance values. Channel geometry incorrect main manifestations are: angle, legs spread and legs and the like. Our channel is mainly made from Tangshan Iron and Steel, Bao Steel, Shandong Steel, yellow special, Maanshan Iron and Steel, Bao, Xuanhua Steel, Nippon Steel, several steel production. Channel Model | Fair Commerce Bo (certified) | Hefei channels provided by the Hefei exhibition Bo Trading Company. Hefei Show Bo Trading Company (www.hfzhanbo.com) is Hefei, steel leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the exhibition of Commerce Bo leadership with the staff warmly welcome all inquiries negotiations to create the exhibition of Commerce Bo better future.