Secondary settling tank with water wells, pumping stations coarse grid @ coarse grid

Secondary settling tank with wells galvanized coarse grid @ influent pumping station coarse grid galvanized coarse grid is made of steel grating, surface treatment after galvanizing acid corrosion, extending the life of reduce user costs. HDG coarse grid is widely used in the secondary settling tank with wells and water pumping stations, such as sewage treatment plants, by the customer's pro-gaze. Surface treatment galvanized coarse grid divided into: hot galvanized and cold galvanizing; because in the sewage treatment process secondary settling tank with wells and pumping stations and other locations through the water pH encountered strong chemical raw material, Q235 coarse grid has a strong corrosive material, so galvanized into too coarse grid after galvanizing treatment can prevent corrosion, acid and alkali. Hot-dip galvanizing line with coarse grid galvanized GB / T 13912-2002 national standards. Product design requirements: 1, according to the conditions of use (carrying value and the installation span), from the "safe load and deflection load and span relational tables" selected steel grating models. 2, platform aisle design requirements: Steel Grating platform to withstand design loads, its deflection of not more than 1/100 of the span, the platform walkway not exceed the maximum 10mm, in addition to meeting the above requirements, all platforms should meet the following requirements: a, design load value X1.5, the steel grating without permanent deformation b, the design load value X3.0, the steel grating not crack c, the design requirements under special loading conditions mutually agreed by both parties 3 , stair treads design requirements: Under the design load conditions, arbitrary stepping midpoint deflection of not greater than 1/200 of the span, the maximum can not exceed 6mm, in addition to meeting the above requirements, all the treads shall meet the following requirements: a, the design load value X1.5, steel grating without permanent deformation b, the design load value X3.0, the steel grating not crack 4, layout design: a, according to the nominal width of the table preferred the original plate width When less than the width of the original board, the choice of the number of flats corresponding nominal width value b, steel grating load flat opposite ends of the support frame supporting the length of each side of not less than 25mm c, row plate gap: between the steel grating 5 -10mm, steel grating minimum width (walkway) between the steel grating on the adjacent structure 10mm d, platform 300mm QQ 1412852949 TEL: 18730886941