iron bonnel spring

bonnel spring Features: 1, Size : all size is available. Base on customer’s requirementExample: Size Height Pcs/crate QTY in 40HQ King 1890x1980 mm 12cm—20cm 18 774 Queen 1490x1980 mm 12cm—20cm 20 1060 Full 1310x1850 mm 12cm—20cm 20 1260 twin 930x1850 mm 12cm—20cm 20 1700 Wire diameter: 1.7 mm—2.4mm Border wire diameter: 4.0 mm--5.0 mm Helical wire diameter: 1.6 mm--1.8 mm coil Diameter: 65 mm--90 mm Mid-coil diameter:45 mm—60mm Turns: 4—7 2 Application: used for mattresses 3,Characteristic: The Bonnell spring is the classic Spring Unit, and through the years, proven its worth. It is made from around hourglass shaped springs which are tied together to form a mat. A round helical crosswise connects each single spring to a spring unit. The quality is guaranteed by the careful selection of the materials used and regular quality control.