IS 4985 Quality Standards
How our rigorous testing protocols ensure zero bursts, smooth joints, and 50+ year pipe lifespan in tough field conditions.
What Does IS 4985 Mean for Your Project?
IS 4985:2000 is the Indian Standard benchmark for unplasticized polyvinyl chloride (uPVC) pipes used for potable water supplies and agricultural irrigation schemes.
When purchasing from Stellar Pipes, this standard guarantees that:
- ✓ No Regrind Impurities: Formulated using virgin grade polymer resin to ensure tensile resilience and prevent sudden wall brittle fractures.
- ✓ Accurate Wall Thickness: Every meter of pipe meets or exceeds the required radial thickness for its specified pressure class (2.5 to 6 kgf/cm²).
- ✓ Drinking Water Safety: Free from toxic extractable heavy metals, ensuring 100% safety for domestic and livestock drinking water.
Our 4-Stage Quality Check
OFFICIAL QUALITY GUARANTEERaw resin inspection before extrusion feeding.
Chilled vacuum calibrator maintains uniform roundness and wall thickness.
Sample pipes pressurized to 1.5x working class for 1 hour without weeping.
Every socket checked with standard plug gauges for leak-tight field jointing.
Institutional Transparency
All commercial and government tender dispatches are backed by genuine tax invoices and batch inspection records.