mattress spring

mattress spring, coil spring for mattress
wire: 2.1mm 2.2mm 2.3mm 2.4mm
height: 10cm-18.5cm
head ring: 60mm-90mm
mattress spring
On Standard Spcs. For Bonnell Mettress
Current consumption(380V 3PH)28.2A
The 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.