Spiral stairs

Our spiral stairs are manufactured according to PN-80/M-49060 and the Building Law regulations.
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Spiral stairs
Spiral stairs are fabricated in sets: structural tube, treads and barriers with hand-rails.

Please, specify in your order:

- external staircase diameter "D"
- staircase height "H"
- staircase rotation direction ("L" or "R")
- location of exit and entrance
- barrier type

D - staircase diameter
H - staircase height
h - stair height
d1 - central tube diameter
d - sleeve diameter