• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: hershey spring
  • Model Number: HES-ES-151208a
  • Style: Cylinder
  • Load Type: Extension
  • Material: Steel
  • Usage: sports, Industrial,sports,trampoline spring
  • wire diameter: 2.0~3.5mm trampoline spring
  • Length: 120~300mm trampoline spring
  • Outside diameter of spring: 15~30mm trampoline spring
  • material: carbon steel/stainless steel 304
  • finish: zinc plated,nickel plated,powder coating
  • working life: more than 5,000,000times
  • strength test: Yes
  • rust proof: rust proof trampoline spring
  • Certifications: ISO9001/ROHS/SGS

Packaging & Delivery

Packaging Details packing with plastic bags, outer cartons or wooden boxes. also according to your requirement

                                     Dongguan galvanized trampoline spring for trampoline park

Extension Springs are close-coiled helical springs designed to resist an axial pulling force. Extension Springs or tension springs stretch from free length to a longer extended length to store energy, and offer resistance or provide a restoring force to a pulling force between two points.

Most extension springs are manufactured from round wire and are close wound with initial tension which offers a small deflection load for secure installation. You can design an extension spring with open wound coils when zero initial tension is required or when the spring needs to perform as an extension and a compression spring for the same application. Hershey Spring Solutions manufactures custom extension springs in different lengths and degrees of tension to suit your specifications.

Trampoline Spring Models
 Trampoline Spring  Manufacturer
Product Name trampoline springSupply Ability900000000PCS
Wire diameter2.0mm~4.0mmType of shippingBy sea/air/DHL/Fedex/UPS etc

Quality certification

ISO9001:2008.SGS,the French

BV authentications

Payment termL/C,T/T,D/A,D/P,Western union,Money Gram,Paypal
The scale of Hershey springAbout 6000 suqare meters


Employee numbersAbout 100.and our group are becoming larger

Industry Experience

Over 21 years' experience in the spring industry.
Hershey Spring Factory




Hershey Extension Spring Application

electronics, electrical appliances, toys, locks, stationery, baby carriage, bicycle, gifts, crafts, kitchen appliances, cameras, printers, office equipment, precision equipment and various types of transportation……

Trampoline Spring Material

1.Stainless steel 304(SUS304),rust proof is better,more expensive;Popular



2.Carbon steel(Spring steel)+Glavanzied,rust proof is not bad,price more competitive;Popular



3.Music wire(SWP),good elasticity,more expensive.


Trampoline Spring Surface Treatment

Electroplate: nickel,zinc, gold, silver, copper...(*ROHS and REACH standard)

Electrophoresis: all kinds of colors, springs can pass 8 to 48 hours Salt Spray Test (*ROHS and REACH standard)

Dacroment,teflon: suitable for long hours outdoor usage ,can pass 90 hours Salt Spray Test (*ROHS and REACH standard)

Hershey Spring Production Process
Hershey Spring Packaging Process
Hershey Spring Order Process
Why Choose Hershey Spring?
   A good partner is waiting for you here:







Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
China (Mainland) | Manufacturer, Trading Company
Transaction Level:
Supplier Assessments:
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $42,000
Learn More