Galvanized fence products used in many occasions, galvanized fence with low prices, and simple installation method, compared to traditional wrought iron railings, the fence has a galvanized surface layer protects the steel body from pollution characteristics . Hot dip galvanized steel surface is coated with galvanized zinc coating spray fence sales of steel substrate having a sacrificial anode protection, can be used for atmospheric corrosion environments. Heat galvanized fence: Because the casting wall thickness uneven heating, cooling and phase transformation during hot dip galvanized guardrail purchase, will have the force and effect of the stress. Also after the machining of large parts of its internal residual stress is also easy, all of which stress must be eliminated. Stress relief annealing heating temperature is generally 500 ~ 550 ℃ holding time of 2 ~ 8h, and then furnace cooling, this process eliminates the use of 90 to 95% by casting stresses, the cast iron structure, but does not change. If the temperature exceeds 550 ℃ or holding time is too long, it will lead to graphite, the casting strength and hardness decreased. When casting cooling, surface and thin section was often produce white. White tissue hard and brittle, poor processing performance, easy to peel off. Therefore annealing method must be used to eliminate white tissue. During the high-temperature hot-dip galvanizing spray insulation fence, swim and high cementite eutectic cementite decomposition of graphite, in the subsequent cooling process protection and secondary cementite eutectoid cementite decomposition also occurred graphitization process . Due to the decomposition of cementite, resulting in decrease in hardness, thereby improving the machinability. Hot dip galvanized fence manufacturers, St. Ye metal, hot dip galvanized fence Linyi provided by Linqu St. Ye metallwarenfabrik. Linqu St. Ye metallwarenfabrik (www.shengyehl.com) provide customers with "zinc steel fence, galvanized fence, spray fence, cement fence" and other services, the company has "Ye Holy fence" and other brands. Focused on metal building materials industries, have higher visibility in Weifang, Shandong. Welcomes inquiries, contact: Zhaoxiang Wang.