Changchun roof ventilators prices Nanjing roof ventilators manufacturers sunlight should be placed on corrosion engineering, to achieve the effect of long-term preservation, must meet three basic requirements: good surface treatment, select high-performance materials, reach a certain coating thickness. (1) Surface treatment is strictly in accordance with the requirements of rust, the steel surface rust is not complete, leaving a layer of rolled steel surface oxide scale. Peroxide skin is a high-temperature corrosion product is a tri-iron tetroxide, and it is in the water containing trace salts, and steel electrode potential difference of up to 0.26 volts. Mill scale in the water film will serve as the cathode in forming the anode, the pure steel. Corrosion anode constantly cathode gradually expanded, the arch broken coated corrosion products, steel structure corrosion. So, good rust treatment is essential, and surface processing quality should to reach before painting steel surface preparation specifications Sa2.5 level. (2) and procurement the chlorosulfonated polyethylene qualified primer, intermediate coat and topcoat. (3) Road paint spraying should wait cured after spraying a paint, formulated in accordance with the correct proportion of diluent to ensure that the coating thickness of 150um. (4) painting finished components should not be within 78 hours of shipment or installation. Liaocheng Sunshine Stainless Steel Co., Ltd. is currently the only company specializing in the production of roof ventilation equipment manufacturers. In recent years, under the joint efforts of the engineering and technical personnel, factory production of free electricity --- roof ventilation is currently one of the domestic specifications largest and most complete variety of manufacturers. 300, 360, 450 with residential buildings, the villa floor roof ventilation mouth, 500, 600, Model 680 is mainly used for exhaust ventilation plant workshop and large public places. All stainless steel body, cast aluminum support special double sealed bearings. World-class product sales over the face of the country, after-sales service. Windmill - wind pumps fuel, no electricity, manufacturing, and that is able to start. High tower fan blade diameter of 5-10 meters, all nine specifications can be designed according to the different needs of production. Colorful the weathervane widely used in the park, and the edge of the green belt, villas and corporate production environment, it can not only indicate the wind direction and speed levels can also add a dynamic and harmonious environment. The face of strong competition in the market, our factory always adhere to manufacture high quality products for the guidelines, adhere to honesty, excellent service up to a maximum customer satisfaction associates: King Star Manager Sales Tel 0635 -8322238 13906356805