The Graepel rubber stud spiral stair tread is available in two options:
- for on-site welding
- with a welded step tube that can be directly attached to a stair center tube. This version complies with the DIN EN ISO 1461 standard.
The Graepel rubber stud spiral staircase step is made of steel (DD 11) and is suitable for use in public areas. It is designed for a uniform load of 5 kN/m² and a point load of 1.5 kN on a 200 x 200 mm area.
The surface is dominated by rubber studs, which provide slip resistance and sound insulation, making this step quiet underfoot. The rubber studs (black as standard) are supplied loose and must be hammered in by the customer. Red rubber studs are also available upon request, for example, to make step edges more visually prominent.
