bonnell spring, made of high quality steel materials all springs are with heat treatment

bonnell spring, bonnell spring for spring mattress

made of high quality steel materials all springs are with heat treatment and anti-rust treatment, good price good elasticity

wire dia. 2.0mm-2.4mm

height: 3inch-7inch

turns: 4turns- 7turns

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.

bonnell spring