Features for leaf spring                                          

                               Leaf spring manufacturing process                             

 1.Shearing of flat bar

 2.Center hole punching

 3.End heating process forming

4. Heat treatment:

     a. heating

       b. camber forming

       c. quenching

       d. tempering

5. Surface preparation:

    a. shot penning / stress peening

       b. painting

6. Eye bush preparation process:

    a. Eye reaming / eye boring

       b. Bush insertion / bush reaming

 7. Assemble:

    a. Presetting & load testing

       b. Paint touch-up

       c. Marking &packing

                                                 Main Images                                                       

We can also provide moer trailer parts,such as:axle,suspension ,leaf spring ,

brake chamber,king pin fifth wheel,landing gear and so on.

                                          Our company’s advantages                                     

1 OEM manufacture in semi trailer parts

2 Can be customized

3 ISO9001:2000 certificate

4 steady and large supply

5 reasonable and competitive price

6 efficient and professional service on export trade 

                                    Company Brief Introduction                                         

Shandong Liangshan Zhengyang Trailer Parts CO.,LTD is a professional manufacture in semi-trailer parts,

located in the famous trailer base—Liangshan,Jining,Shandong province. 8000 square meters workshop,

over 200 professional workers,ISO9001:2000 certificate in product quality, neary 10 years’ experiences

in producing semi trailer parts, enjoying high reputation,I’m sure we could serve you well.

                                                     Exhibition                                                      

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