Bonnell Spring:

(1)size:all sizes against clients' requirement

(2)Head gauge:7.0~9cm

(3)Rounds:6

(4)Wire diameter:2.0~2.3mm

(5)Core diameter:5.5cm

(6)Process:all spring are with heat treatment and anti-rust treatment

(7)Advantage:keep elastic and durable .

Each coil is made from quality high carbon steel wire , providing great surface flexibility , distributing lasting elasticity .

Selecting quality high strength non woven fabric or fantastic AP fabric , maximize the low-friction effect , extend the life of spring coils .

Covering non woven fabric on the bottom and top of the spring layer , prevent other filling mattress from sinking into the coils .

Please also visit us at our website and feel free to contact us through alibaba with any specifications not listed above that address your local market. We would appreciate the opportunity of working with you to fulfilling your requirements.