1. Compression Spring

Compression springs are our most common spring type, they have very wide range of applications 

and could be found in almost all mechanical products, such as automobile, machinery, automotive 

equipment, valves, electric switches and so on.
 

2. Extension Spring

Extension springs are widely used in machineries, automatic devices, power transmission, door locks, etc. 

The ends are normally different types of end loops and hooks, there are also a wide range of 

other mechanical attachment possibilities, such as coiled in and screwed in attachments. 

For example, half hooks, German loops, English loops, extended hooks, side hooks, side loops, screw plugs and 

screw shackles.  

A spring is an elastic object used to store mechanical energy. Springs are usually made out of spring steel. 

There are a large number of spring designs; in everyday usage the term often refers to coil springs.

Springs are made from a variety of elastic materials, the most common being spring steel. Small springs can be 

wound from pre-hardened stock, while larger ones are made from annealed steel and hardened after fabrication. 

Some non-ferrous metals are also used including phosphor bronze and titanium for parts requiring corrosion resistance and beryllium copper for springs carrying electrical current (because of its low electrical resistance).

Packaging of Springs

Shanghai Metal Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.

1) Shanghai Metal Standard

2) Customization

Our Service

To meet the entirety of our customers business needs, Shanghai Metal Corporation offers its services as a “One-Stop Shop” for business services including Purchasing, Value-Added Manufacturing, Packaging/Labeling, and Delivery. Shanghai Metal Corporation prides itself on achieving superior results and satisfying customer needs. In this, we earnestly strive to fulfill our role as trustworthy and reliable supplier of business services throughout the entire world.

Our Value-Added Manufacturing Services not only save our customer time from having to out-source, but also spare them the cost of dealing with several disparate shops and deadlines. 

Applications of Springs:

1) Vehicles: Vehicle suspension

2) Watches: Balance springs in mechanical timepieces and spring-loaded bars for attaching the bands and the clasps

3) Mini Drill

4) Jewelry: Clasp mechanisms

5) Lock mechanisms: Key-recognition and for coordinating the movements of various parts of the lock.

6) Pop-open devices: CD players, tape recorders, etc.

7) Pens

8) Spring mattresses

9) Slinky

10) Trampoline

11) Pogo Stick

12) Spring reverb

13) Buckling spring keyboards

14) Upholstery: Upholstery coil springs

15) Toys

16) Educational, etc.