Trench cover | steel grating | galvanized steel grating of a test method, test trench cover appearance. If the trench cover is hand-welded, it will generate a lot of dross over car steel grating trench cover weight, in order not to affect the appearance, may propose to clean up. If the trench cover is machine welded, good or bad edging is a major factor affecting the quality of products. Regularity of the weld, with or without open welding Weld, is the need to look carefully at the eyes. Second, the test trench cover size, diagonal. National standards for precision steel grating aspect is 5mm. Each trench cover the length and width were reduced scale 5mm, easy to install. If every piece of steel grating Grand 5mm, it is estimated that the site can not be installed, so the discovery of steel grating is normal within a short 5mm (consider installing factors), if you do not have a scale, can be explained in advance, I am using the NC welding accuracy can be controlled within 3mm. The diagonal measurement of the product, if the data is equal to the diagonal measurement error was less than 5mm, then the apparent size of basic products on the basic qualification. Third, the test trench cover the pitch and flat steel thickness, trench cover the pitch affects the trench cover the cost of carrying capacity and cost, we GB is generally flat in the center identified spacing is correct measurement method distance from the center of a flat in the center of the other flat to, if someone tells you it should be the distance from the flat edge to the other edge of the root flat, that is wrong. The thickness of flat steel thickness national standard maximum error of + -0.25mm flat performance can be galvanized steel grating trench cover, usually thick galvanized the thickness increases, ah, so you get a card with a caliper data does not exceed 0.25 mm product is qualified. Air Products Co., Ltd. Hebei gold mesh in a "people-oriented, quality for survival," the purpose, strictly control the quality of products, customers are welcome to visit our company trench cover, unfold for. Trench cover is a steel grating, which is made of steel grating from. Flat steel, rail specifications: 1, steel: the material is Q235A or stainless steel, ordinary flat type, tooth type and section I slip type. Common specifications 20 * 5,25 * 5,25 * 3,32 * 5,32 * 5,40 * 5,40 * 3,50 * 5,65 * 5,75 * 6,100 * 8,100 * 10 and so on. 2, the bar: Material for Q235A or 304 stainless steel round bar, twisted steel, square steel or six angles. Twisted square steel plate garden by the side of the mold by drawing and twisted together, their common specifications are 5 * 5,6 * 6,8 * 8mm and so on. Hebei professional production of various types of aircraft gold steel grating, trench cover, stepping board, welcome to consult and order. Steel grating trench cover leave trench cover _ _ Hang gold grating by Hebei Airlines Golden Screen Products Limited. Gold mesh Hebei Airlines Co. (www.hbhangjin.com) strong, credible, Hebei Hengshui wire mesh industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Air gold mesh and you hand into the brilliant, for a better future!