Place of Origin

 China(mainland) 

Materials

Steel  65# (Mn)

Load type

Torsion

Model number

Torsion   spring

Style

Spiral

Usage

Rolling   door, Garage door , Industrial, Furniture

Surface treatment

Oiled

Wire diameter

¢5mm-¢9mm

Outer diameter

¢78mm-¢110mm

Packing detail

Inner packing with plastic bags+ carton boxes for outer packing+   wooden or plastic pallets 

Delivery time

25-35 Days

Payment terms

30% T/T, balance 70% T/T should be paid before shipment 

Price terms

 FOB, EXW

Supply ability

50,000   T/per year

Specification

(Normal) 

(d)   5.5*(OD)80*(NT)50(55,60,65,70,75,80)

(d)   6.5*(OD)80*(NT)50(55,60,65,70,75,80)

(d)   7 *(OD)85*(NT)50(55,60,65,70,75,80)

Remark   : d=Wire diameter, OD=Outer diameter, NT=Total number of coils