Grating also called grating steel grating of ￥ I mean after edging weight and surface treatment * (except for non-surface treatment) after the theoretical weight. Since the edging, different openings and incision size, actual weight and theoretical weight will be some differences. In calculating the weight of the industrial platform steel grating and steel grating * delivery settlement, unified theoretical basis for the calculation of weight * to. For less than 1 m and a length of less than one square meter of steel grating trench cover, for example, or the need for special edging steel grating, due to increased edging boards, weight will increase. When using flat steel edging, steel grating length of not less than one meter, according to the following formula to calculate the theoretical weight of steel grating: Wt = (b1t1N1 + b2t2N2 + 2b3t3) ρμ × 10-6 .................. (1) where : Wt- steel grating weight, in kilograms per square meter (kg / m2); t1- carrying flat width in millimeters (mm); b1- flat bearing thickness, in millimeters (mm); N1- per meter flat bar steel grating hosted; t2- crossbar width in millimeters (mm); b2- crossbar thickness, in millimeters (mm); N2- per meter steel grating in the number of rail ; t3- edging flat width in millimeters (mm); b3-- edging flat steel thickness, in millimeters (mm); ρ- material density, in kilograms per cubic meter (kg / m3); Steel density by 7850kg / m3 computing; μ-- surface treatment weight gain coefficient; hot-dip zinc weight gain by 1.06 to calculate steel grating (1) hot dip galvanized flat steel grating center spacing: to distinguish accordance series: Series 1 Specifications for 30mm; Series 2 specifications for 40mm; Series 3 specifications for the 60mm. (2) hot dip galvanized grille crossbars center spacing: Series 1 specification for 100mm, Series 2 specification is 50mm .. Other specifications can be customized. (3) hot dip galvanized flat steel grating: Material for Q235A or stainless steel, a common plane type, tooth type and section I slip type. Common specifications 20 * 5,25 * 5,25 * 3,32 * 5,30 * 5,40 * 5,40 * 3,50 * 5,65 * 5,75 * 6,100 * 8,100 * 10 and so on. (4) hot-dip galvanized steel grating crossbar: 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.

keywords: Grating, steel grating, trench cover, ,