| Suspension Leaf Spring for Trailers&Trucks Specification |
| 1.Production Name : | Parabolic leaf spring made by SUP9, SUP10 (50CrVA) steel |
| 2.Types | sup7,SUP9, SUP10(50CrVA) steel leaf spring |
| 3.Width | 45~120mm |
| 4.Thickness | 6~50mm |
| 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 |
| Leaf springs production processing and requirements . |
| Material incoming | Chemical Composition test Mechanical Performance test |
| Material cuting | Cutting machine |
| straightening | Straightening machine |
| Drilling Holes | Drilling machine |
| Volume ear | Automatic volume ear machine |
| Parabolic machining | Automatic parabolic leaf spring rolling mill |
| quenching | Heating treatment production line |
| tempering | Heating treatment production line |
| Hardness test | 100% test |
| Shot blasting | Shot blasting machine |
| Assembly | Leaf spring assemble line |
| Pre- compression | Pre-compression machine |
| Coating | Spray painting line |
| Testing | Hardness,Magnetic particle inspection , Dimension inspection, Performance test machine, |
| Package | in the pallets. |
