Apartment bed because the nature of the metal structure itself, in the habitable environment for the corrosion of metals is a must face and solve problems. In other words, low bed metal structure in the environment of use must be reduced to the metal structure formed by the threat technology. Technology in a variety of common applications, the phosphating process is a relatively common and relatively effective metal anti-corrosion treatment technologies. Metal member by the chemical and electrochemical reactions to form a phosphate chemical conversion coating film, and thus to protect the base metal, to a certain extent, prevent the corrosion of metal; used primer before painting, to improve the adhesion of the film layer and the anti- corrosion; cold working process in the metal from friction lubrication. Visible, bunk bed made of metal structure parts, the use of phosphate treatment process is a good way of corrosion corrosion. Especially for the phosphating process, the details of the presence of micro-processing, to the phosphating process during use of the bunk bed to show a satisfactory satisfactory results. On the bed www.njsycj.com