Spirale - Import export

Lengths, diameters, forces and colour correspond to ISO 10243. F1 indicates the load on the spring for a long service life with spring travel of 25% of L0. F2 indicates the load on the spring for a medium service life with spring travel of 30% of L0. Fmax. indicates the maximum load rating of the spring with spring travel of 40% of L0. F = force required to compress the spring 1 mm.

Spiral sealing wire

Spiral staircase takes less space than the staircases of other structures, therefore, it fits well in homesteads, lofts. Disadvantage of spiral staircase Inconvenient as it turns around its axis. It is difficult to pass each other, to bring up items, furniture. All stairsteps are triangular, therefore, there is not enough space for foot, when going down. Advantage of spiral staircase It does not require large space. The staircase of rotating structure is plastic like, creating the special design of small space.