Steel Grating stair treads made generally use what size it? Common treads size T1 to T4 30mm pitch 125,155,185,215,245,275,305T1 to T2 40mm pitch 125,165,205,245,285,325T3 to T4 40mm pitch 115, 155,195,235,275 , 315T1 to T2 60mm pitch 185,245,305T1 to T2 60mm pitch 155,215,275 from an economic point of view, staircase steel grating, it is recommended whenever possible modulus width (Series 1 using 125,155,185,215, 245,275, staircase steel grating factory outlets, Series 2 uses 125,165,205,245,275mm etc.) is 100mm multiple lengths (eg 500,600,700,800,900,1000,1200mm etc.). Staircase size is based on the bay stairwell, depth, story, each stair step to determine the height and width, length and width of the ladder, and set the width of the platform. (Note: double stair treads stepping on each series is best to take an even number, so that the two run-run stair treads equal to the number of design requirements: Under the design load conditions, the staircase steel grating how to sell, any stepping midpoint deflection of not greater than 1/200 of the span, the maximum should not exceed 6mm, in addition to meeting the above requirements, the staircase steel grating where all treads shall meet the following requirements: a, when the design load value X1.5, Steel grating without permanent deformation; b, the design load value X3.0, the steel grating not crack; Xu Connaught screen (Figure) _ staircase steel grating how to sell _ staircase made of steel grating Anping Asahi Connaught County Metal Mesh Products Limited. Anping Wire Mesh Products Co., Ltd. Asahi Connaught (www.wangpian1688.com) is a professional "mesh, barbed wire, steel wire mesh, steel grating, perforated metal mesh, fence net, ginning network, chain link fence, "the company since its inception, we adhere to the" good faith, sound management "approach, the courage of healthy competition in the market, so that the" Asahi Connaught metal mesh "brand has a good reputation We adhere to the "first, the user first serve" principle, so that the wire mesh Asahi Connaught has won numerous customer's trust in the wire mesh, and establish a good corporate image Special note: This information only pictures and information For reference, please contact us to obtain the most accurate information, thank you!