PVC Pipe Sizes Chart: mm to Inch and PN Ratings Explained

Correct pipe sizing prevents costly rework on site. This guide covers metric/imperial conversions and pressure class selection for V-UK uPVC pipes.
Common size conversions
20mm (½"), 25mm (¾"), 32mm (1"), 50mm (1½"), 63mm (2"), 90mm (3") and 110mm (4") are the most ordered sizes for residential and commercial projects in West Africa.
PN ratings
PN6 suits low-pressure irrigation. PN10 is standard for building water supply. PN16 handles higher static head and booster pump systems.
Related Products
V-UK products mentioned in this article

Grey uPVC pressure pipe for cold water supply, PN10 rated, solvent-weld joints.

High-pressure uPVC pipe for mains and booster systems, PN16 rated.
Frequently Asked Questions
Written by
V-UK Admin
V-UK technical & marketing team
Related Articles

uPVC vs PVC vs CPVC Pipes: What's the Difference?
Understand the material differences between uPVC, PVC and CPVC — and which pipe type suits your plumbing project in Ghana and West Africa.
Read More
Schedule 40 vs Schedule 80 PVC Pipe
Compare wall thickness, pressure capacity and cost between Schedule 40 and Schedule 80 PVC pipe for plumbing projects.
Read More
Types of PVC Pipe Fittings and Their Uses
A visual guide to elbows, tees, couplers, reducers, caps and unions — and when to use each PVC fitting type.
Read MoreRequest for Quotation
Interested in the products discussed in this article? Send us your requirements and our team will respond with a tailored quotation.
- Competitive bulk & project pricing
- Response within 24 hours
- Technical specs included with every quote
Get a Quote
We typically respond within 24 hours on business days.