First , confirm the size of your spiral staircase
and the spiral diameter is >1000mm, and the common length can be 60”, 66in, 72in,78in)
When the spiral staircase diameter is smaller than 1.5M, the wood treads without support is a good affordable choice, 1.5M
Edge+Center column Support
Only Center column Support
The style is determined by the components of the staircase , we will find that , there is metal spiral staircase , wooden staircase , glass spiral staircase , victorial spiral stairs, and all kinds of custom style.
glass spiral staircase
wood treads+steel railing
All steel
Treads Options
To the outdoor environment, the spiral staircase treads can be setted with the human protection function, such as the anti-slip surface for the treads .