bonnell spring, coil spring for mattress wire: 2.1mm 2.2mm 2.3mm 2.4mm height: 10cm-18.5cm head ring: 60mm-90mm

On Standard Spcs. For Bonnell Mettress Current consumption(380V 3PH)28.2AThe coil not be out shape!knotting without error

Mechanical Compositon:C:0.65 Mn:0.61 Si:0.17 S:(max.0.008 P(max.)0.015

Tensile Strength( N/mm2):1660~1960

Twist Times:26~28

Spring Turn:4~6

External Spring(Ø):60~90mm

Middle Spring(Ø):30~57mm

Elongation:hard

Packing on pellets:it will be packed for by sea shipping.

mattress spring