China Conventionaltype Used Leaf Springs for Trailer Truck

 
1. On Wondee leaf springs Since 1999
2. 20 years experience on semi trailers and components
3. 1 year Quality warranty
4. ISO, TS16949 Certificate
5. 7x16 hours service
6. Customized ODM OEM leaf springs available 
7. 4 Global Offices

A leaf spring is the most widely used elastic element in automobile suspensions.

It is an approximate equal strength steel beam composed of several alloy spring sheets of equal width and unequal length. Its main function is to transmit all forces and moments between wheels and frames, relax impactive load caused by the road surface and realize vehicle guidance, make vehicles normal drive.

Leaf springs are widely applied to suspensions for heavy duty trucks, light duty trucks, pick-ups, cars, skeletal trailers, lowbed trailers, flatbed trailers, oil tank trailers, van trailers, wood transport trailers, gooseneck trailers, agricultrucal vehicles, etc. Classification of Leaf Springs include Conventional leaf springs, parabolic leaf springs, Z type air linkers, TRA leaf springs, trailer leaf springs,light duyt trailer spring, boat trailer springs, pickup leaf springs, semi trailer springs, truck springs, farming/agricultural trailer springs, sprung drawbar, bus springs, bogie/boogie springs, heavy truck springs, etc.

WONDEE Leaf Springs Features

Comprehensive Info of  Leaf Spring:

 

WONDEE hot selling leaf springs OEM numbers:

Workshops  of WONDEE Autoparts leaf springs :


Processes & equipment  of WONDEE Autoparts leaf springs :
(1. Flat bar cutting and hole punching→ 2. Spring ends processing→ 3. CNC automatic eye rolling→ 4. Spring heating→ 5. Spring quenching→ 6. Spring tempering→ 7. Spring shot peening→ 8. Leaf spring assembling→ 9. Spring e-painting)

QC equipment  of WONDEE Autoparts leaf springs :

(Material Metallographic analysis, spring spectral analysis, raw material inspection, eyes inspection, spring camber inspection, spring hardness test, salt spray test, fagigue life test, spring rate test)

Warehousing & Logistics  of WONDEE Autoparts leaf springs: 

Wondee leaf springs Specification:

1.Leaf spring raw material source: Our spring flat bar is from the top 1 steel material supplier in China.
2.Color: Red, shinning black, dark black, grey, blue leaf spring.
3.Materials: 60Si2Mn,SUP6,SUP7,SUP9,SUP9A,SUP10,SUP11 and SUP11A are available.
4.Certificate: ISO9001; TS16949; COC; PVOC; CIQ; SONCAP; BV; C/O; FORM E.
5.Suitable for Truck, trailer and bus leaf springs : ,MAN,,TOYOTA,BPW,RANDON,UAZ ,MERCEDES- BENZ,DAF,,HOWO,CIMC
6.Our products are popular in the worldwide market, including North American, South American, European, African
  Wondee leaf spring has reached more than 100 countries.


Wondee leaf springs Advantage:
 
01.No Rust problem + Perfect looking
Method:
>> Single leaf by electrophoretic painting(Optional)
>> Sembling spring by electrostatic painting(Optional)
Benefits for customers
>> Salt spray testing > 500 hours beat general industrial level 200 hours,avoid rust possiblity
>> Perfect-looking -- uniform painting, complete painting, no scratch
 
02. Pre shot-peening
Method:
>> Make shot peening under rated capacity
Benefits for customers
>> 180,000 times fatigue life beat general level 150,000 times; 
>> bear heavier capacity and use longer time; 
 
03. Pre-pressing and adjust
Method:
>> Make pre-pressing under rated capacity 
>> Select camber by computer
Benefits for customers
>> Guarantee reasonable camber and keep smallest tolerance, 
>> select out leaf spring whose camber is not qualified




Conventional OEM Steel Truck Trailer Leaf Spring Production Process:

FAQ:
 
Q: How do you guarantee quality?
A: We take quality inspect records from raw material to finished product.
   The former department bear 100% responsibility for next process.
 
Q: Can you produce if we have samples only?
A: Our technical ability is strong enough to deal with different types of spring.
   Sample drawing and customers' interests will be protected well.
 
Q: Is it possible to have sample for quality testing?
A: Same or similar sample are available for free.
 
Q: What is your MOQ?
A: For common material size, MOQ requires 30~50 pcs;
   For special material size, Moq requires 3 ton or more;
 
Q: What is your terms of payment?
A: T/T, L/C, Western Union,
 
Q: How do customers evaluate WONDEE?.
A: I must say that you have solved this problem very well.
   It is always best to be open and solve these kind of problems in best possible way for both of us.

Components & spare parts  of WONDEE Autoparts leaf springs 




Besides trailer Leaf springs   ,  WONDEE also Supply semi trailer parts as belows: