Smooth inside, corrugated outside. DWC pipes give you HDPE-grade burial strength at a fraction of the cost.
DWC (Double-Wall Corrugated) pipes pair a smooth inner wall with a corrugated outer wall. That gives them very high ring stiffness at low material cost — perfect for buried cable ducts, telecom OFC runs and gravity drainage.
Indian Standard: IS 16098 Part 2
IS 16098 (Part 2) covers structured-wall thermoplastic pipes for non-pressure underground drainage and sewerage. DWC pipes are classified by ring stiffness — SN 4, SN 8 and SN 16.
Where DWC Wins
HT and LT power cable ducting under roads.
Telecom and OFC ducting for long stretches.
Non-pressure sewerage and storm-water drains.
Industrial effluent and process drains.
Sizes Available
75 mm, 90 mm, 110 mm, 160 mm, 200 mm, 250 mm, 315 mm and 400 mm with matching couplers and end caps.
Why DWC Replaced Hume Pipes
1/8th the weight — no crane required.
Push-fit jointing in minutes vs hours of cement collar work.
Smooth bore = lower friction = lower pumping cost.
Zero corrosion under aggressive ground conditions.
Frequently Asked Questions
What is the full form of DWC pipe?
DWC stands for Double-Wall Corrugated pipe — a structured-wall pipe with a smooth inner and a corrugated outer wall.
Which IS standard covers DWC pipes?
IS 16098 (Part 2) covers DWC pipes for non-pressure underground drainage and cable ducting in India.
Can DWC pipes carry pressurised water?
No. DWC pipes are designed for non-pressure gravity drainage and cable ducting only.
Reviewed by
Sahil Jindal
Managing Director, Jindal Composite Tubes Pvt Ltd
3rd-generation pipe manufacturer with 25+ years of hands-on experience in PVC, CPVC and UPVC pipe engineering, ISI/BIS compliance and India-wide plumbing distribution.