Outdoor spiral staircases are usually used in public places. It usually made of stainless steel or carbon steel, and hot dip galvanized is a necessary process. In some cases straight staircases are used.
Specification Reference
- Stair diameter range :1194-2032mm(47″-80″)
- Central post diameter 114mm(4- 1/2″)
- Thickness of treads: 4~10mm steel checkered plate
- Railing options: stainless steel cross bar/steel columns
- Surface treatment: galvanized before painting
Don't worry! We will send you the installation instructions and provide free online installation guide service after you receive the goods