Hot dip galvanized fence process: (1) can be chemically to skim oil or water-based metal degreasing and cleaning agent to the oil reached the fence until the board is completely water infiltration. (2) can be acid H2SO4 15%, thiourea 0.1%, 40 ~ 60 ℃ or with HCl 20%, hexamethylenetetramine 1 ~ 3g / L, 20 ~ 40 ℃ pickling. Adding inhibitors to prevent corrosion of the substrate through the reduction of iron substrate and hydrogen absorption. Degreasing and pickling good cause poor adhesion of the coating, zinc or zinc plating layer does not fall off. (3) dip fluxing agent, also known as binding agents, dip can be maintained at a certain activity before wrought iron fence panel fence to enhance the coating and substrate. NH4Cl 15% ~ 25%, ZnCl2 2.5% ~ 3.5%, 55 ~ 65 ℃, 5 ~ 10min. May be appropriate to reduce the volatile NH4Cl added glycerol. (4) In order to prevent the divider plate preheating drying when the temperature rise due to the sharp dip deformed spray rails and removing residual moisture, to prevent explosion of zinc, zinc causing explosion splashing liquid, preheating is generally 120 ~ 180 ℃ . (5) hot-dip galvanized to control the temperature of molten zinc, dip time and fence panels removed from the zinc solution speed. Temperature is too low, poor mobility liquid zinc coating thick and uneven roads prone to sagging fence poor appearance quality; temperature high fence, good fluidity liquid zinc, zinc liquid disengagement fence panels to reduce the phenomenon of sagging and wrinkled skin happen, strong adhesion, coating thin, good appearance, high production efficiency; But the temperature is too high, the iron fence panels and zinc pot severe loss, resulting in a lot of dross, affecting the quality dip zinc coating, zinc consumption big, not even the plating. Why galvanized guardrail will be affected by the new and old customers welcome, Here we give a brief shiny galvanized guardrail point: a, strong, durable, reliable connection, structured well. 2, the natural beauty: thick, simple, clear. 3, malleable, according to customer requirements, to create a variety of sizes and styles of hot dip galvanized fence. 4, easy to install, undulating terrain without restrictions, suitable for large-scale use. 5, the price is affordable. [Fence] _ road metal guardrail fence _ Xiu Wei Wei Metal series is provided by the show. Welcome to consult Linqu show Wei Metal (www.xiuweijinshu.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Shi Xiuwei