This process has no mold, low processing cost, easy forming, can process a variety of shapes and other characteristics are widely used. But the products of the guardrail are powder impregnated plastic. According to whether it needs heating, it is divided into hot dipping and cold dipping. According to the raw materials of dipping, it can be divided into liquid dipping and powder dipping. Hot-dip galvanizing, as a metal anticorrosion method, is usually to put the steel structure to be derusted into the zinc liquid at about 500℃, so that the zinc layer is attached to the surface of the steel structure.

Wire factory introduction annealing wire is widely used mainly because it has good elasticity and flexibility, in the process of annealing can be very good control of its soft and hard degree, it is mainly made of iron wire, more often used in the construction industry tied wire use. In the production of annealing wire will be processed according to the performance of the material, according to the demand for different degree of hardness of its soft change, can make it has more advantages, can reduce the consumption of metal, reduce the cost of production.