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| Customization: | Available |
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| After-sales Service: | Accept |
| Warranty: | 2 Years |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Looking for a dependable coil spring for railway bogies? CHENJI has manufactured hot coiled suspension springs for rail customers since 2014. This CS-RW-BS-001 heavy duty bogie coil spring is designed for high load capacity and long fatigue life in demanding service, and suits freight wagons, passenger coaches and locomotives.

All springs are manufactured from premium spring steel (60Si2Mn, 50CrVA or custom alloy grades per requirement) using hot coiling process, followed by quenching, tempering, shot peening and anti-corrosion surface treatment to meet railway industry durability standards.
| Parameter | Value |
|---|---|
| Material | Spring steel, alloy steel, customized per drawing |
| Wire diameter | 10mm - 90mm (customized) |
| Outer diameter | 50mm - 300mm (customized) |
| Free length | 100mm - 600mm (customized) |
| Total coils | Customized per specification |
| Load capacity | Customized per load requirement |
| Surface treatment | Paint coating, zinc plating, electrophoretic coating, customized |
| Certification | ISO9001:2015 |
| Warranty | 24 months |
