Stair tread Main type: 1. Checkered plate nosing , Bolted fixing anti-slip 2. Checkered plate nosing, Welded fixing anti-slip 3. Without nosing, Bolted fixing 4. Without nosing, Welded fixing Bolted fixing, holed end plates Widely used in stairways of steel structures and steel ladders, this stair tread is significantly easier to install and maintain. We can provide various standard products and are happy to fulfill customized orders. Main specification: 1. Bearing bar height x thickness: 20x3, 25x3,25x5,30x3,30x5,32x3,32x5,34.3x3.34.3x335x3,35x5,38x3,38x5,40x3,40x5,50x3,50x5,etc. 2. Bearing bar pitch xtwisted bar pitch : 30x100,30x50,40x100,40x50,60x50, 30.16x101.6,etc.