Sofa Coil Spring, Biconical spring, Coil Spring, Spiral spring, Zigzag spring,nosag spring,sinuous spring,coil spring,sofa spring,seat spring,back spring belong to sofa part or sofa fitting, it is made from high tensile  steel wire.

Feactures:

1).Wire diameter: 3.0mm-4.3mm

2).Height: 10cm-30cm

3).Head OD.:8-13cm

4).Barrel OD.: 4-6

5).Process: All springs are with heat treatment and anti-rust treatment.

6).Packing: in poly bag or  carton

Good quality  and competitive  price.