---
title: "250mm DWC Sewerage Pipe Specs"
canonical: https://www.alompoly.com/products/size/250mm-dwc-pipe
source: ALOM Poly Extrusions Limited
---
# 250mm DWC Sewerage Pipe Specs

Alcorr 250mm DWC pipe is designed for high-capacity gravity flow networks in municipal corporations, highway cross-culverts, and mine dewatering. Delivers 30% higher flow coefficients than legacy rough concrete pipes.

## Specification
- **Brand:** Alcorr
- **Full name:** Alcorr 250mm Double Wall Corrugated HDPE Pipe
- **Nominal size:** 250 mm ID
- **Outer diameter:** 290 mm
- **Inner diameter:** 250 mm
- **Ring stiffness:** SN 4 / SN 8 / SN 16 Stiffness
- **Standard:** IS 16098 (Part 2)
- **Supply length:** 6 m / 9 m / 12 m Sticks
- **Typical application:** Primary Sewer Mains, Highway Cross-drains & Mining Overburden

## FAQ

### What is Manning's roughness coefficient (n) for Alcorr?
Alcorr has a mirror-smooth inner wall with a Manning's n of 0.009, compared to 0.013 for concrete, ensuring superior hydraulics.

### Is it certified by the Bureau of Indian Standards?
Yes, our plants carry BIS license marks for DWC pipes conforming to IS 16098 (Part 2).

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