I plant railing products of high strength, bending, bending, tensile, frost, shock, anti-acid, anti-aging, and unique artistic style, the image of the noble style hot dip galvanized fence manufacturers, permanent rugged, lasting color, ventilation and bright, hot dip galvanized fence romantic luxury sales, landscaping landscape, transforming the walls of the preferred, widely used in factories, schools, parks, municipal, roads, bridges, etc., are government agencies, military factories , schools, real estate, residential, industrial parks, villas ideal green fence. In addition, users can choose different styles, different shapes of products according to the regional environment, highlighting the personal taste and vision. Heat galvanized fence: casting wall thickness due to uneven heating, cooling and phase change process, will produce effects and organizational 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 usually 500 ~ 550 ℃ holding time of 2 ~ 8h, then the furnace hot dip galvanized fence, using this technology can eliminate 90 to 95 percent within the casting stress, but does not change the cast iron structure . 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 at the Anqiu galvanized spray fence, tend to 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 insulation, high travel cementite eutectic cementite decomposition and graphite, in the subsequent cooling process protection and secondary cementite eutectoid cementite decomposition also occurs graphitization process. Due to the decomposition of cementite, resulting in decrease in hardness, thereby improving the machinability. Hot dip galvanized fence wholesale, hot dip galvanized guardrail, St. yup yup metal provided by Linqu St. metallwarenfabrik. Linqu St. Ye metallwarenfabrik (www.shengyehl.com) strong, credible, Shandong Weifang metal building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the holy Ye into the brilliant metal and you work for a better future!