Line outside the annealing: Before hot-rolled or cold-rolled steel is galvanized into the operating line, first draw a bottom type annealing furnace or annealing furnace in the recrystallization annealing, galvanizing Hefei beam, so galvanized the word Quote steel, galvanized wire does not exist the annealing process. Before galvanized steel must be a non-oxide and other dirt from the presence of iron active surface clean. This method is for the pickling method annealed to remove surface oxide scale, and then coated with a layer of protection by the zinc chloride or ammonium chloride and zinc chloride solvent consisting of a mixture of hot galvanized beam thereby preventing oxidation of the steel sheet again. Fixed at both ends, the midpoint withstand the applied vertical concentrated load jack 10t, span of 1.4 meters, requires 20b types of beams, cold galvanizing beam, corresponding deflection of 1.087mm, a safety factor of 1.68, the material is Q235B, I do not know where you want to use, this deflection can basically be used in all the beams. But replaced by 18 # steel workers have the safety factor is too small, if it is to work piecemeal steel you can put it in the material change Q345B. Then I can change the 18 # steel workers. 18 # steel workers corresponding deflection of 1.65mm, a safety factor of 1.83, the material is Q345B. Hefei galvanized beams, exhibition of Commerce Bo, galvanized by the Hefei exhibition beam wholesale Bo Trading Company. Hefei galvanized beams, exhibition of Commerce Bo, galvanized beam wholesale Hefei Show Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) this year introduced a new upgrade, the above picture is only for reference, please call the contact phone book page or image on to obtain the latest information, contact: Mr. Huang.