Japanese Trailer Leaf Springs for off-Road 8*60

Suspension Leaf Spring for Trailers&Trucks Specification
1.Production Name :	trailer part leaf spring made by 60Si2Mn steel
2.Types	60Si2Mn steel leaf spring
3.Width	45mm---150mm
4.Thickness	5mm---60mm
5.Components:	Leaf,clips/clamps,center bolt bushing,tip insert,nuts
6.Color	shinning black,dark black,grey,Red, Galvanized
7.Materials:	SUP7(60Si2Mn),SUP9(55CrMnA),SUP11,52CrMoV4,50CrVA or as your required
8.Quality level:	Excellent quality for international market, made in China

Manufacturing Process
1. Shearing of flat bar
2. Center hole punching / Drilling
3. End heating process forming - Eye Forming / Wrapper Forming - Diamond cutting / end trimming / width cutting / end tapering - End punching / end grooving / end bending / end forging / eye grinding - Center hole punching / Drilling / nibbing
4. Heat Treatment - Heating - Chamber forming - Hardening - Quenching - Tempering
5. Surface preparation - Shot peening / Stress peening - Primary painting
6. Eye bush preparation process - Eye reaming / eye boring - Bush insertion - Bush reaming 7. Assemble - Presetting & load testing - Finish painting - Marking & packing

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