---
title: "90mm HDPE Pipe (3 Inch) Specs"
canonical: https://www.alompoly.com/products/size/90mm-hdpe-pipe
source: ALOM Poly Extrusions Limited
---
# 90mm HDPE Pipe (3 Inch) Specs

QFlow 90mm solid wall HDPE pressure pipe (equivalent to 3-inch nominal) is engineered for high-volume water mains, fire hydrant loops, and acidic mine dewatering lines. Highly resilient to soil settlement, external loads, and seismic shocks.

## Specification
- **Brand:** QFlow
- **Full name:** QFlow 90mm Solid Wall HDPE Pressure Pipe
- **Nominal size:** 90 mm OD
- **Outer diameter:** 90 mm
- **Inner diameter:** 73.6 mm (avg)
- **Wall construction:** Homogeneous Solid Wall
- **Pressure classes:** PN 6, PN 8, PN 10, PN 12.5, PN 16, PN 20
- **Standard:** IS 4984 / ISO 4427
- **Supply length:** 6 m Sticks
- **Typical application:** Township Main Distribution, Fire Hydrant Rings & Mine Dewatering

## FAQ

### Is a 90mm HDPE pipe suitable for fire fighting loops?
Yes, PN 10 and PN 16 rated 90mm pipes are regularly used for underground fire hydrant loops because they do not rust internally.

### How are valves connected to 90mm HDPE lines?
Valves are connected using HDPE stub ends (flange adapters) and metallic backing rings bolted to the valve flange.

For CAD drawings, compliance certificates and B2B pricing estimates, contact mktg@alom.in.