Rain grate is made of flat steel and twisted square steel or flat steel and flat welded. Rain grate with beautiful appearance, the best drainage, high strength, specifications and low cost, it is usually the use of steel grating grate rain. With the development of science and technology, resin or plastic steel bars are used to reinforce tendons and inorganic fillers to form a brand new composite water grate. The advantage is that weight is lighter than cast iron water grates and the cost is low. The disadvantage is that the strength is not as high as cast iron water grates.
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