250The 50 steel plank features M18 bolt holes for connecting planks and adjusting the bottom width of the platform. Between steel planks, a 180mm high step is used, painted black and yellow alternately, and securely fastened with screws in each of the three holes. This ensures a fixed connection between the steel planks. After completion of the connection, the materials for the platform construction should be strictly inspected and approved. Once the platform is assembled, it should undergo testing. Upon successful installation and inspection, a sign should be hung, and then it can be put into use. Steel plank specifications: 25050 Galvanized Steel Deck Plates, Hooks, Step Plates.