Metal steps ideally suited for self assembly of steel stairs the westfalia stair steps are designed according to din 24531 with a double perforated safety edge and lateral mountings made of flat iron with holes for fastening to the staircase construction fully galvanized fully corrosion resistant in accordance with din en iso 1461 ideal for self assembly of steel stairs the hole width of the holes is 150 mm the mesh width is 30 x 30 mm the staircases are assigned to the rating group slip r