OD match
15, 22 and 28 mm are selected UK metric copper outside diameters. They are not inch conversions and not industrial DN.
UK metric copper · manufacturer product rows
Pipe insulation size guide
Start with the pipe's real outside diameter. Match 15, 22 or 28 mm UK copper to a documented tube row, compare wall options and calculate the geometry without pretending that size alone proves thermal compliance.
Domestic sizing15 / 22 / 28 mm copper OD, selected ArmaFlex configurations and a downloadable dimensional dataset.
Industrial heat lossFor DN steel, steam and process conditions, use the separate pipe heat-loss calculator.
Selection result
—
—manufacturer product code
—insulated outside diameter
—straight length including allowance
—geometric insulation volume
—outer cylindrical area
OD, not DNUK metric copper selector
Saved comparisons
| Pipe / wall | Product code | Required length | Outside diameter |
|---|
What this selector calculates
Worked example: 22 mm copper
Wednesbury's UK table lists 22 mm BS EN 1057 copper tube. Select the 22 mm manufacturer row, then choose a documented 9, 13, 19 or 25 mm wall to compare dimensions. A 19 mm wall gives an outside diameter of 22 + 2 × 19 = 60 mm.
The calculation then applies your own straight-length allowance. It calculates cylindrical volume and outside area from geometry only. It does not infer heat loss, compliance or a purchase quantity from carton contents.
Wall choice
The official matrix proves that a configuration exists in the cited market. It does not decide which wall is required for your application.
Performance
Frost delay, condensation, heat loss, fire and regulatory checks need their own inputs and evidence.
Downloadable data
12 source-linked compatibility rows
Checked · Version 2026-08-29.1 · Selected manufacturer facts, not a complete catalogue or current UK stock file.
UK pipe sourceWednesbury's BS EN 1057 table supplies the 15, 22 and 28 mm copper sizes.
Product-row sourceArmacell France's official 2026 catalogue supplies the selected standard-tube codes and carton linear metres.
Geography stays visibleThe matrix is a manufacturer engineering reference. UK availability, pack format and price must be checked locally.
View all selected rows
| UK copper OD | Copper wall | Insulation wall | Product code | Catalogue carton | What the row confirms |
|---|---|---|---|---|---|
| 15 mm | 0.7 | 9 mm | AF-CO-09X015 | 200 m | France 2026 reference |
| 15 mm | 0.7 | 13 mm | AF-CO-13X015 | 122 m | France 2026 reference |
| 15 mm | 0.7 | 19 mm | AF-CO-19X015 | 72 m | France 2026 reference |
| 15 mm | 0.7 | 25 mm | AF-CO-25X015 | 48 m | France 2026 reference |
| 22 mm | 0.9 | 9 mm | AF-CO-09X022 | 140 m | France 2026 reference |
| 22 mm | 0.9 | 13 mm | AF-CO-13X022 | 100 m | France 2026 reference |
| 22 mm | 0.9 | 19 mm | AF-CO-19X022 | 56 m | France 2026 reference |
| 22 mm | 0.9 | 25 mm | AF-CO-25X022 | 40 m | France 2026 reference |
| 28 mm | 0.9 | 9 mm | AF-CO-09X028 | 98 m | France 2026 reference |
| 28 mm | 0.9 | 13 mm | AF-CO-13X028 | 82 m | France 2026 reference |
| 28 mm | 0.9 | 19 mm | AF-CO-19X028 | 48 m | France 2026 reference |
| 28 mm | 0.9 | 25 mm | AF-CO-25X028 | 36 m | France 2026 reference |
The CC BY notice covers Inzonex's selection, arrangement, calculations and annotations. Manufacturer facts remain attributed and are not relicensed.
When this tool is not enough
Industrial steam or steel
Use the industrial pipe heat-loss calculator. DN15 steel is not 15 mm OD.
Condensation or frost
Use service temperature, humidity, wind, flow and exposure time. A dimensional match cannot prove protection.
Regulatory selection
Use the applicable jurisdiction, system and licensed standards. This page does not reproduce BS 5422 tables.
Sources
- Wednesbury Tube: UK and Asia BS EN 1057 size ranges — 15, 22 and 28 mm metric copper tube sizes and wall values. United Kingdom.
- Armacell France 2026 catalogue, AF/ArmaFlex Evo standard tube matrix — Manufacturer product codes and carton linear metres for selected pipe outside diameters and insulation walls; not evidence of UK availability. France.
- ArmaFlex application manual, UK edition — Installation context and confirmation that AF/ArmaFlex tubes are used around pipe outside diameters. United Kingdom.
- AF/ArmaFlex UK product brochure 072026 — Current UK product-family description and application boundary; it is not the source of the tube matrix. United Kingdom.
Pipe insulation sizing questions
What size insulation fits 15 mm copper pipe?
For the selected UK metric copper system, 15 mm is the pipe outside diameter. Choose a manufacturer tube row listed for 15 mm pipe OD, then choose wall thickness separately for the actual service and jurisdiction. The dimensional match alone is not a compliance decision.
Are 15, 22 and 28 mm copper sizes the same as DN15, DN22 and DN28?
No. The Wednesbury BS EN 1057 table uses 15, 22 and 28 mm metric copper tube sizes. Industrial DN is a different nominal system and can have a different outside diameter. Measure or identify the actual pipe system before choosing insulation.
Does a thicker wall guarantee frost or condensation protection?
No. Frost delay depends on pipe contents, flow, ambient temperature, wind and exposure time. Condensation control also depends on vapour-seal continuity, humidity and pipe temperature. This page deliberately does not turn a dimensional row into a performance guarantee.
How much pipe insulation should I buy?
Measure the straight pipe runs and add only the allowance you choose. The tool reports required straight linear metres, insulation volume and insulated outside diameter. Valves, elbows, tees, joints and damaged sections need separate take-off; current UK pack sizes and stock must be checked with the supplier.
Continue the calculation
Industrial pipe heat loss · Dew point and condensation check · Building U-value · Insulation knowledge hub