Certified manufacturing, verified at every stage
From raw polymer to finished coil, every Corvin Polytech tube goes through multi-stage testing to meet international quality standards.
Our Certifications
MSME Registered
Govt. of India
Quality Testing Process
Raw Material Testing
Every batch of polymer compound is tested for purity, hardness, and melt index before extrusion.
Air Pressure Testing
Burst pressure and working pressure tested at multiple temperature points per international standards.
Dimensional Accuracy
OD, ID, and wall thickness verified with laser micrometers across the full coil length.
Long-term Durability
Accelerated ageing, ozone exposure, and flex-fatigue tests for product life validation.
Our quality protocols apply to all PU and TPU pneumatic tube products, ensuring every coil meets the standards expected by export buyers and industrial OEM customers.
QC checklist on every batch
- Raw material spectroscopy
- Compound hardness verification
- Melt flow index check
- Dimensional accuracy (OD/ID/wall)
- Burst pressure testing
- Working pressure cycle test
- Color consistency check
- Surface finish inspection
- Coil winding & packaging audit
- Final batch traceability
Quality FAQ
How does Corvin Polytech test PU pneumatic tubes?
Every batch is checked for raw material quality, dimensional accuracy, working pressure, burst pressure, color consistency, and packaging quality.
Can buyers request quality documents?
Yes. Export buyers and OEM customers can request test reports, certificates, and batch traceability details with their shipment.