---
title: "40mm HDPE Pipe Specs"
canonical: https://www.alompoly.com/products/size/40mm-hdpe-pipe
source: ALOM Poly Extrusions Limited
---
# 40mm HDPE Pipe Specs

QFlow 40mm solid wall HDPE pressure pipe (equivalent to 1.25-inch nominal) is engineered for medium-sized borewell pump systems, agricultural sprinkler headers, and industrial chemical process lines. Resists chemical attack, abrasive slurries, and extreme pressure surges.

## Specification
- **Brand:** QFlow
- **Full name:** QFlow 40mm Solid Wall HDPE Pressure Pipe
- **Nominal size:** 40 mm OD
- **Outer diameter:** 40 mm
- **Inner diameter:** 32.6 mm (avg)
- **Wall construction:** Homogeneous Solid Wall
- **Pressure classes:** PN 8, PN 10, PN 12.5, PN 16, PN 20
- **Standard:** IS 4984 / ISO 4427
- **Supply length:** 6 m Sticks / Coils
- **Typical application:** Borewell Rising Mains, Sprinkler Loops & Chemical Feeders

## FAQ

### What is the standard length of a 40mm pipe?
It is supplied in standard 6-meter straight lengths or 100-meter coils depending on the thickness and client project requirements.

### Is the internal surface prone to scaling?
No, HDPE is extremely smooth (Manning's n ≈ 0.009) and chemically inert, which prevents scaling or calcification from hard borewell water.

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