Direct answer: Zhengna Technology manufactures custom precision springs from buyer drawings, covering compression, extension, torsion, and formed spring designs with material selection, forming, stress relief, surface treatment, and load inspection.
| Buyer check | Why it matters |
|---|---|
| Material and wire diameter | Controls load, fatigue life, corrosion resistance, and forming stability. |
| Load points and working range | Confirms the spring performs in the real installed condition. |
| Heat treatment or stress relief | Stabilizes force, dimensions, and fatigue behavior after forming. |
| Surface treatment | Matches corrosion, appearance, and assembly environment requirements. |
| Inspection and packaging | Protects traceability, load consistency, and deformation-free shipment. |
Send material, wire diameter, outside diameter, free length, load points, working stroke, finish, quantity, and application environment.
Yes. Zhengna Technology supports compression springs, extension springs, torsion springs, wire forms, and coated or plated spring programs.
Load testing confirms whether the spring performs at the installed working height or stroke, not only whether its free dimensions look correct.
EN
