Spiral stair tread Graepel-Rubber Stud

The spiral staircase step Graepel-Rubber Stud for welding on is made of hot rolled low carbon steel (grade DD11) and is suitable for use in public areas. The spiral staircase step can be welded to a central pipe by the customer. It is designed for a uniformly distributed load of 5 kN/m² and a concentrated load of 1.5 kN for 200 x 200 mm.

The surface consists predominantly of rubber studs. These provide slip resistance and sound insulation, making walking on these steps very quiet. The rubber studs (standard color is black) are supplied separately and must be inserted by the customer using a mallet. Red rubber studs are also available on request, for example in order to visually highlight the step's edges.

The material thickness is 2.5 mm. The perforation or embossment runs parallel to the stair’s nosing. The corners are not welded. The spiral staircase step can be supplied with a left- or right-hand turn, for different stair radii, and different center support column diameters.

More information about the Graepel rubber stud embossment.