|Place of Origin:||Guangdong,China|
|Brand Name:||Xulong spring|
|Certification:||ISO 9001:2008 TS 16949,ROHS|
|Minimum Order Quantity:||1pc|
|Packaging Details:||carton 37cm*27cm*20cm|
|Delivery Time:||Up to quantity|
|Payment Terms:||T/T , Western Union,Paypal|
|Supply Ability:||100 000pcs per month|
|Material||Spring steel 82B|
|Surface treatment||zinc coating|
|Usage||plastic extruding machine|
Description of Long Tension Spring:
Our tension springs are available with different end configurations to facilitate the attachment to components being acted upon. End configurations that we offer include full loop,machine hook,coned end with swivel hook or bolt,crossover hook and custom shaped hook.
Our tech dep can design springs to have initial tensions according to the load requirement of your applications. We will also validate spring designs before manufacturing, and secondary processes such as color-coding, plating, and heat-treating are must for extension springs to make sure high quality.
Contact us today to learn more about our customized solutions for your unique application.
Applications for extension springs include automotive interiors and exteriors, garage door assemblies, appliances,furniture,engineer machines,washing devices, farm machinery as well as thousands of other uses. XULONG’s extension springs come in a wide array of sizes, from small medical devices to off-road machinery brake springs and marine container.
XULONG SPRING’S Key features
|1. wire diameter:0.08-60mm|
|2. Material:stainless steel(SUS 301/SUS304/SUS316),carbon steel,music wire,alloy steel,spring steel,cold drawn steel,phosphorous bronze,SWPA/SWPB etc|
|3. Spring pitch changeable|
|4. Finish:peen shooting,oiled,powder coating,zinc plating,nickel coating,chrome coated etc|
|5. Heat treatment:tempering,stress relieving|
|6. Certification:ISO 9001:2008 TS 16949|
|7. Spring Package:PE bags,cartons,pallets|
|8. Application:appliance,automotive,mould,machinery,elevator,office equipment,shock absorber,lamps and lanterns,toy,telecommunication,lawn/garden,high speed rail,textiles etc|
Q) For Extension Springs, what is free length and how is it measured?
A) Free length is the overall dimension of an extension spring in the unloaded position. The free length is measured from the inside of one end loop (or hook) to the other and can be varied by changing the end configuration without changing the number of coils.
Q) How does stress relieving or heat treating affect extension springs?
A) It can reduce the spring's initial tension, change the hook's position, or create a change in the spring's diameter.
Q) What are three things you can do to maximize the life of an extension spring?
A) The path of the wire should be smooth and gradual as it flows into the end; marks and other stress concentrations should be held to a minimum; and a minimum bend radius of 1 1/2 times the wire diameter is recommended.