Stringer | 200*100*5mm in carbon steel |
Tread support | 6mm thickness steel plate |
Stair tread | 60mm thickness solid wood tread |
Railing # height | 36''/42''/1000mm |
Baluster | 50*50mm in carbon steel |
wire rope | 4mm in sus304 |
Top handrail | 50*50mm in solid wood |