JIS Die Springs from Yuanbang Spring

Sourcing dependable JIS die springs for your molds? Yuanbang Spring is your trusted manufacturer based in Dongguan, China.

Our color-coded die springs follow JIS B5012 specification, using rectangular flat wire to deliver greater load capacity than ordinary round wire compression springs. Each color corresponds to a distinct load level: extra light, light, medium, heavy and extra heavy load, helping engineers pick the right spring quickly.

We offer two mainstream materials to match different working environments. 65Mn is cost-effective for general mold use, while 50CrVA performs better under high temperature and frequent cyclic compression. All springs go through strict production processes including vacuum heat treatment, shot peening and presetting, which effectively minimize permanent set and prolong service life. The electrophoresis surface treatment ensures uniform color and basic corrosion protection.

Application Scenarios Injection molds, metal stamping dies, die casting molds, holding jigs, automation fixtures and other industrial machinery.

Factory Advantage We hold ISO and CE certifications. Small trial orders and bulk orders are both welcome. We can supply material certificates and test reports to meet your import and inspection requirements.