Shop by Bore Size
Shop Pipe Insulation by Bore Size
Find the perfect K-FLEX pipe insulation for your pipe diameter. Browse our complete range organised by bore size - from domestic 15mm to industrial 114mm and beyond.
Not sure which bore size you need? Measure the outside diameter of your pipe to determine the correct bore size. Compare product types →
Domestic & Residential Bore Sizes
Popular sizes for domestic heating, plumbing, and hot water systems:
15mm Bore
Most common domestic size for radiator feeds, basin taps, and small appliances
Shop 15mm →Commercial & Light Industrial Bore Sizes
Ideal for commercial buildings, offices, hotels, and light industrial applications:
Industrial Bore Sizes
For industrial facilities, district heating, and large-scale commercial installations:
Extra-Large Industrial Bore Sizes
🏭 Large-Scale Industrial & District Heating
We stock K-FLEX K-Rock mineral wool insulation for extra-large bore sizes including:
133mm | 140mm | 159mm | 168mm | 219mm | 245mm | 273mm
These sizes are ideal for:
- District heating and cooling networks
- Large-scale industrial facilities
- Power generation plants
- Major commercial developments
- Municipal heating systems
Need a quote for large bore sizes? Contact our team for pricing and availability.
Quick Reference Guide
| Bore Size | Typical Applications | Sector | Shop |
|---|---|---|---|
| 15mm | Radiator feeds, basin taps, small appliances | Domestic | View → |
| 18mm | Hot water systems, heating circuits | Domestic | View → |
| 22mm | Central heating mains, hot water distribution | Domestic | View → |
| 25mm | Large domestic hot water and heating systems | Domestic | View → |
| 28mm | Large domestic, commercial heating mains | Domestic/Commercial | View → |
| 35mm | Large domestic, small commercial systems | Domestic/Commercial | View → |
| 42mm - 64mm | Commercial HVAC, multi-unit buildings | Commercial | View → |
| 70mm - 114mm | Industrial, district heating, large facilities | Industrial | View → |
| 133mm - 273mm | District heating networks, power plants, major industrial | Large Industrial | Contact Us |
Need Help Choosing?
📏 Measure Your Pipe: Use a tape measure or caliper to measure the outside diameter of your pipe. This is your bore size.
📚 Compare Product Types - Not sure which material? Compare K-FLEX ST, PE, PE PLUS, PE COLOR, SOLAR HT, and K-Rock.
📖 Technical Resources - Installation guides, datasheets, and specifications.
💬 Contact Our Team - Need expert advice? Our technical team is here to help you choose the right insulation for your project.