SUPERIOR Superior Steel-String-Staircase. Steps/Treads: Wood, Glass, Stone. Handrail: Stainless Steel. Balustrade: Steel/Glass. Technical Details: Steel String Staircase with treads in wood, straight, Stair width up to 1600mm. Steel structure with iron 10mm for treads 40mm thick; Wood type A, finish according drawing. Both strings consisting of double string, supporting string 20mm thick; 2. string where glass will be attached becomes 10mm thick, each 10mm thick in IRON COLOUR ACCORDING YOUR CHOICE. Balustrade consisting off: Security glass 8+8 tempered clotted with foil. All edges chamfered and grounded. Glass balustrade clamed between steel string according drawing. Attached round handrail in wood or stainless steel. Handrail height 1000mm.