Qingdao Herosun Industrial and Trade Co., Ltd.  

Product Name: Small Trailer Leaf Springs with Double Eyes Model NO.: SW4B Type: Suspension Spring OEM: Yes Position: Front Car Make: Benz, Honda, Toyota, Jeep, Nissan, Ford, Volvo, Mazda Certification: ISO/TS16949 Material: Carbon Trademark: QDHEROSUN Transport Package: Pallets Specification: SUP7, 60Si2Mn Origin: China HS Code: 7320102000 Product Description SuspensionLeafSpringforTrailers&TrucksSpecification1.ProductionName:trailerpartleafspringmadeby60Si2Mnsteel 2.TypesDouble eyes multi leafspring3.Width44.5mm4.Thickness6mm-8mm5.Components:Leaf,clips/clamps,centerbolt bushing,tipinsert,nuts6.Colorshinningblack,darkblack,grey,Red,Galvanized7.Materials:SUP7(60Si2Mn)8.Qualitylevel:Excellentqualityforinternationalmarket,madeinChinaManufacturing Process 1. Shearing of flat bar2. Center hole punching / Drilling3. 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 / nibbing4. Heat Treatment - Heating - Chamber forming - Hardening - Quenching - Tempering 5. Surface preparation - Shot peening / Stress peening - Primary painting6. Eye bush preparation process - Eye reaming / eye boring - Bush insertion - Bush reaming 7. Assemble - Presetting & load testing - Finish painting - Marking & packing