
AH-STR-009 09 / 10
AH-STR-009 · Curved staircase
Solid Plate Spiral Stair
A continuous spiral flight in black steel, rolled so both the outer and inner stringers run from floor to upper landing without a joint. Treads are welded and ground flush on both sides.
- Application
- Curved staircase
- Material / finish
- Solid steel plate / iron-tone finish
- Stringers
- Continuous rolled steel plate, no joint
- Treads
- Solid steel, welded and ground flush
- Finish
- Iron-tone coating following the plate's natural gradient
- Portfolio reference
- AH-STR-009 · 2026 · Page 88
Materials and finishes reflect the portfolio references. Dimensions, sections, finishes and fixing details are confirmed for your project through approved shop drawings and finish samples.
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