ISO 9001:2015 Quality Assurance & Testing in Jamnagar
At our Jamnagar spring manufacturing facility, quality control is integrated into every CNC coiling step. We verify spring load rates, wire tolerances, and fatigue limits to deliver zero-defect industrial springs.
Material Grade Compliance
We wound custom springs strictly to Indian, American, and European material standards:
- IS 4454 (Cold Drawn Spring Steel wire)
- ASTM A228 (High-tensile Music Wire)
- EN 10270 (Standard for Spring Steels)
- JIS G3521 (Hard Drawn Steel Spring wire)
- Stainless Steel Grades 302, 304, 316
Equipped for Calibrated Verification
We maintain a dedicated testing laboratory equipped to verify mechanical behavior, fatigue limits, and physical geometry. Every test is logged against batch production records for B2B traceability.
Digital Load Calibration Tester
Determines accurate spring force at specified compression/tension lengths.
Optical Profile Projector
Verifies precise helical pitch, leg angles, and radius geometry at 10x-50x magnification.
Digital Wire Hardness Testers
Ensures uniform heat treatment and tempering across wire sections.
Laser Free-Length Controllers
Provides continuous, non-contact feedback to CNC coiling heads during production.
Digital Micrometers (0.001mm)
High-precision wire and outer diameter auditing.
Quality Control Inspection Gates
Our springs undergo six structured QC inspection gates during the transformation from raw wire coils to finished assemblies.
Raw Material Intake Audit
Every incoming batch of spring wire is checked for coil diameter consistency, surface cracks, and cross-referenced with material test certificates (MTCs).
CNC Tooling & Setup Approval
First-off samples from our coiling machines undergo full dimensional audits before the production run is approved for bulk winding.
In-line Electronic Sorting
Our automated CNC machines utilize integrated sorting probes to automatically reject off-spec coils (free length variations) during coiling.
Heat Treatment Auditing
Controlled batch heat-treatment ovens stress-relieve the springs. Ovens are temperature-charted to ensure correct carbon structural locks.
Load-Deflection Testing
Using calibrated digital load testers, springs are compressed to specified operational heights to verify spring rates (N/mm) and force outputs.
Final Audit & Rust Prevention
100% visual inspection, chemical passivation or rust-preventive oiling, and nested tray packing to avoid coil entanglement.
Request Inspection Reports
Need material certificate logs, force-displacement charts, or dimensional reports with your delivery batch? We provide complete documentation support for automotive and enterprise OEM audits.