Heat pipes engineered to your geometry, orientation and watts
A heat pipe that works on the datasheet can stall in your enclosure: orientation, bends and flattening all tax performance. P&A International engineers custom heat pipes — sintered, grooved and mesh wick — through specialist partner plants in China, every supplier ISO 9000 certified or better, with performance derated honestly for your real geometry.
One dedicated engineer takes you from duty definition to tested assemblies — including embedding into heatsinks and full cooling modules.
consultancy + manufacture
per project, end-to-end
qualified samples with test data
every supplier certified or better
bends and orientation priced in, not ignored
Heat pipe capability
Sintered wick
3-12 mm copper pipes that work against gravity — the default for electronics cooling.
Bent & flattened
Formed to your routing — with the performance derating calculated, not discovered.
Embedded assemblies
Pipes soldered or epoxied into heatsink bases for spreading and remote cooling.
Vapor chambers
Two-dimensional spreading for dense heat sources where pipes alone cannot cope.
Heat pipes are qualified per batch: Qmax sampling and leak checks are part of the standard quality file.
Engineering capability
- Sintered, grooved and mesh wick structures, diameters 3-12 mm
- Bending, flattening and machining to your routing and envelope
- Qmax and thermal-resistance engineering against orientation and bends
- Embedding into extruded, forged or machined heatsink bases
- Vapor chamber design and assembly for high-flux sources
- Batch qualification: Qmax sampling, leak test, dimensional inspection
- Full cooling-module assembly: heatsink, fan, shroud, TIM, hardware
At a glance
| Diameters | 3, 4, 5, 6, 8, 10, 12 mm |
| Wick | Sintered (default), grooved, mesh |
| Forming | Bent to R3D typical; flattened to ~2 mm |
| Working range | -30 C to +200 C (water/copper) |
| Volumes | Hundreds to millions per year |
| Quality | Qmax sampling + leak test per batch |
Why engineers & buyers choose PA
For design engineers
Datasheet Qmax assumes a straight, horizontal pipe. Every bend, flatten and vertical run derates it — your engineer calculates the installed performance before you commit, and specifies the wick that survives your orientation.
For purchasing
Specialist parts from specialist plants you did not have to find or audit: ISO 9000 certified or better, batch qualification data with every delivery, and one engineer who answers for the assembled module, not just the pipe.
3 easy steps to get started
Send the duty + routing
Watts, source size, where the heat must go, orientation and bends.
Engineering proposal
Pipe count, diameter, wick and derated performance — with assembly options.
Qualified samples to volume
Samples with Qmax data, then production with per-batch qualification.
Applications
Laptop and embedded computing, telecom and RF power, LED high-bay fixtures, EV charging and battery systems, lasers and optics, medical devices — anywhere heat must move sideways, upwards or simply away faster than aluminium alone can take it.
Most heat pipes ship inside our custom heatsink assemblies. Related: heatsink route comparison and aluminium components.
Heat pipe, vapor chamber, or just a better heatsink?
The honest hierarchy:
| Better heatsink | If the source is large and local — cheapest fix first |
| Heat pipes | Move heat to where the fins fit; spread hotspots into bases |
| Vapor chamber | Dense high-flux sources needing 2D spreading under the fins |
| Pipes + fan module | When natural convection has run out of headroom |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed thermal proposal and price:
- Heat load and source dimensions
- Routing: lengths, bends, flattening, orientation in use
- Ambient and allowable temperature rise
- Envelope and mounting constraints
- Quantities and target dates
A sketch of the enclosure with the hot bits marked is genuinely enough to start.
Get a quote
Describe the heat problem and one dedicated engineer will reply with a pipe specification, derated performance numbers and itemised pricing.
One dedicated engineer reviews every enquiry and replies with a proposed thermal proposal and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au