---
title: "400mm DWC Sewerage Pipe Specs"
canonical: https://www.alompoly.com/products/size/400mm-dwc-pipe
source: ALOM Poly Extrusions Limited
---
# 400mm DWC Sewerage Pipe Specs

Alcorr 400mm DWC pipe is designed for heavy-duty municipal sewer trunks, storm runoff collectors, and highway median culverts. Handles high volumes of water with very low friction.

## Specification
- **Brand:** Alcorr
- **Full name:** Alcorr 400mm Double Wall Corrugated HDPE Pipe
- **Nominal size:** 400 mm ID
- **Outer diameter:** 480 mm
- **Inner diameter:** 400 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:** Highway Culverts & High-volume Urban Stormwater

## FAQ

### Is the 400mm size suitable for highway culverts?
Yes, the SN8 class is approved by NHAI and state highway departments for Class A vehicular traffic loadings.

### What are the joint types for 400mm DWC?
It uses a push-fit socket and spigot system sealed with double elastomeric O-rings to ensure a leak-tight connection.

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