| 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 | 40*8mm in carbon steel |
| Horizontal steel | 40*8mm in carbon steel |
| Top handrail | 40*40mm in solid wood |
