Double staircase with steel rod railing and curved middle landing

Double staircase with steel rod railing and curved middle landing
Description
Double staircase with steel rod railing and curved middle landing

Specification: 
Stringer 300*12mm in carbon steel
Tread support 6mm thickness steel plate
Stair tread 60mm thickness solid wood tread
Railing # height 36''/42''/1000mm
Baluster 42*10mm in carbon steel
Solid rod 8mm in sus304
Top handrail 42mm in sus304

Solid wood stair tread options:


Color for the stairs tread can be customized.
Below are some regular color for reference and choose: