Because zinc can be dissolved in acid and alkali, channel wholesale products, hot-dip galvanizing layer can only be applied to the general atmosphere and natural water environments. Zinc coating when exposed to air and water, will produce a slight electrochemical corrosion. In the rural areas and the air is clean, the zinc coating can be maintained for many years, and in the industrial areas and coastal areas polluted beams, durable life of the zinc coating on the short. Also coating thicker, the longer durable life, Hefei channel wholesale, durable life is almost directly proportional to the thickness. Zinc coating thickness is also available on the mass per unit area (g / m2) represents, 1 μm coating thickness corresponding to the amount of zinc attached to 7.2 g / m2 in. Durable life of the galvanized layer has a large number of experimental data, due to the different specific test environment, there are some differences in the data. Finished channel after hot forming, normalizing or hot-rolled delivery. Its specifications to waist high (h) * leg width (b) * waist thick (d) the number of millimeters, said channel wholesale prices, such as 100 * 48 * 5.3, indicating that the high waist of 100 mm, leg width of 48 mm, thick waist 5.3 mm channel, also known as 10 # channel. Waist high the same channel, if several different legs wide and thick waist also need to model the right plus a, b, c to be different, such as 25 # a 25 # b 25 # c and the like. Hefei wholesale channel, exhibition of Commerce Bo, channel wholesale products offered by the Hefei exhibition Bo Trading Company. Hefei wholesale channel, exhibition Bo Trading, Wholesale channel Hefei Show Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) this year introduced a new upgrade, the above picture is for reference only, please dial this Tel pages or pictures on obtain the latest information, contact: Mr. Huang.