In the choice of the drainage board should pay attention to what one, in the choice of drainage board drainage board must first understand the main Applications, generally if it is used for road traffic on the sidewalk, driveway or parking lot, building floors, etc. because of the different loads and dealers direction, therefore, should pay attention to two during the design and selection, ditch the choice for the road, when the transverse ditch cover, only to consider the wheel pressure and impact of the phenomenon, but also Note that trench cover and shift the risk of bouncing appear circular trench cover how to sell, how much money and therefore circular trench cover, trench cover and angles, beams and other support should be fixed use of partial trench rain grate peace rain grate grate What's the difference? 1. Grate no difference, the difference is the location of the drain catchment; 2, partial trench is generally located Curb side by side of the road side drainage stone to collect rainwater; flat grate circular trench cover price, center or edge of the road may be, the end of the road than some drains to collect rain water by the slope of the road; 3, you can refer to "05S518 gullies." Above all finishing work based on actual problems encountered students from, for reference, any questions, please timely communication, correct me. Circular trench cover uses _ Asahi Connaught wire mesh (certified) _ circular trench cover provided by Anping Wire Mesh Products Co., Ltd. Asahi Connaught. Asahi Connaught Anping Wire Mesh Products Co., Ltd. (www.wangpian1688.com) Hebei Hengshui, the wire mesh of the leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Snow in Asahi Metal Mesh leadership with the staff warmly welcome all inquiries negotiations to create Asahi promise a better future wire mesh.