2.Leaf Spring Specification

1.Components

Leaf,clip,center bolt

2.Color

Red,shinning black,dark black,grey,blue

3.Materials

SUP6, SUP7, SUP9, SUP9A, SUP10, SUP11 and SUP11A are available.

4.Quality level

Excellent quality for international market, made in China, SeaMaster

5.Certificate

ISO9001; TS16949; COC; PVOC; CIQ; SONCAP; BV; C/O; FORME.

6.Truck,trailer,bus suitable

SCANIA,MAN,VOLVO,TOYOTA,BPW,RANDON,UAZ ,MERCEDES-BENZ,DAF,IVECO,HOWO,CIMC

7.Our products are popular in the worldwide market, including North American, South American, European, African

3.Leaf Spring Manufacturing process

Multi-leaf springs are made as follows:

1.Shearing of flat bar

2.Center hole punching / Drilling

3.End Heating process forming (hot & cold process)

(1).Eye Forming / Wrapper Forming

(2).Diamond cutting / end trimming / width cutting / end tapering

(3).End punching / end grooving / end bending / end forging / eye grinding

(4).Center hole punching / Drilling / nibbing

4.Heat Treatment

(1).Heating

(2).Camber forming

(3).Quenching

(4).Tempering

5.Surface preparation

(1).Shot peening / stress peening

(2).Painting

6.Eye bush preparation process

(1).Eye reaming / eye boring

(2).Bush insertion

(3).Bush reaming

7.Assemble

(1).Presetting & load testing

(2).Paint touch-up

(3).Marking & packing

1)steel pallet wrapped with plastic

2) wooden case, wooden pallets

3)customized packing is acceptable