Description Overview Spring wire for the furniture industry. The wire is used for manufacture of furniture springs. Specifications Diameter: 1.4 mm, tolerance -0.04 mm, tensile strength 1570-1770 N/mm², minimal number of twists: 32. Diameter: 1.8 mm, tolerance -0.04 mm, tensile strength 1570-1770 N/mm², minimal number of twists: 32. Diameter: 2.2 mm, tolerance -0.04 mm, tensile strength 1570-1670 N/mm² (class 1) or 1570-1770 N/mm² (class 2), minimal number of twists: 32. Packaging Rosette coils: internal diameter 400-450 mm, weight up to 800 kg. Rings: internal diameter 450 mm, weight 100 kg.