Specifications

A.15 years casting experience
B.Certification:ISO9001
C.Competitive,fast,good services
Garage Door Extension Spring

Garage Door Extension Spring Specification

Model:	E-001	Wire Diameter:	4.5mm
Hook coils:	double	Net Weight:	1.91kg
Free Length:	640mm	Inside Diameter:	28.5mm
Outside Diameter:	37.5mm	Finish:	Zinc-plated

  

What kind of shape Extension Spring we can do for you?
Type of ends: Machine cut plain ends, Single Full loop over center, Small offset hook side, machine half hook over center Double full loop over center, Coned end with swivel bolt, Half loop over center, Full loop at side, Coned end with Swivel Hook, Long round end hook over center, small eye at side, Threaded plug of fit plain end spring, Y-Hook over center, extended eye over center, Drawbar spring, etc.
Relationship between end orientations degrees: In line, 90 degrees, 180 degrees, pls see picture below  

 What's production process for spring making?  

 

How to make Extension Spring as per your enquiries?

 Pls provide me main specification as follows

A. Material
B. Wire diameter(size of material)
C. Body Length
D. Length inside ends
E. Type of ends
F. Ouside diameter
G. Quantity
Or detailed drawing or real samples is very helpful
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