Custom Heat Pipes & Thermal Assemblies, Engineered to Spec
Electronics keep getting denser — and moving heat away from the source is usually the hardest part of the design. P&A International engineers, prototypes and delivers custom copper heat pipes, vapor chambers and complete heat-pipe heatsink assemblies — sintered, grooved and mesh wicks, 3–12 mm diameters, up to 600 W per pipe — bent, flattened and assembled exactly to your routing, envelope and target cost.
As an engineering-led contract manufacturer founded as an engineering consultancy, we assign one dedicated engineer to your project from thermal review to free off-tool samples with quality-assessment reports, then scale into volume through our vetted partner-factory network, where every supplier is ISO 9000 certified or better.
consultancy + manufacture
per project, end-to-end
before mass production
every supplier certified or better
one-off to high volume
What we deliver
Custom copper heat pipes
Sintered, grooved & mesh wicks, 3–12 mm diameter. Bent in 2D/3D and flattened to your routing. Up to 600 W per pipe, custom lengths and machined ends.
Heat-pipe heatsink assemblies
Pipes soldered, epoxied or press-fitted into extruded, stacked-fin & zipper-fin heatsinks and baseplates — delivered as one inspected assembly.
LED & round-profile coolers
Embedded-pipe LED coolers and round extruded thermal modules for natural and forced convection — high-bay, street and architectural lighting.
Vapor chambers & heat spreaders
Embedded-pipe spreader plates and vapor chambers that move heat from small, intense sources across large fin areas.
Engineering capability
- Thermal design — heat-load analysis, target thermal resistance, orientation and derating effects
- Wick selection — sintered, grooved or mesh to match power, orientation and cost
- Forming — 2D/3D bending, flattening, custom lengths, machined ends
- Vapor chambers & embedded-pipe spreader plates for high heat-flux sources
- Assembly — solder, thermal epoxy or press-fit into fin stacks, extrusions and baseplates
- Finishing — nickel plating, anodised fins, painting, laser marking
- DFM review to hit target cost while preserving thermal performance
- Free off-tool samples with quality-assessment reports before any volume order
At a glance
| Types | Sintered / grooved / mesh heat pipes, vapor chambers, spreader plates |
| Diameter | 3 – 12 mm round; flattened sections to ~2 mm |
| Capacity | Up to 600 W per pipe (diameter, wick & orientation dependent) |
| Forming | Custom lengths, 2D/3D bending, flattening, machining |
| Assembly | Extruded / stacked-fin / zipper-fin heatsinks, baseplates, LED modules |
| Finishing | Nickel plating, anodised fins, painting, laser marking |
| Samples | Free off-tool samples + quality-assessment reports before mass production |
| Quality | Every supplier in our network is ISO 9000 certified or better |
Why engineers & buyers choose PA
For design engineers
A true thermal-design partner — one dedicated engineer, heat-load analysis and wick selection, bend and flattening derating handled at design time, and assemblies optimised for thermal resistance, weight and cost. We routinely take on anti-gravity orientations and tight 3D routings that off-the-shelf pipes cannot reach.
For purchasing
Low-risk scalability — free off-tool samples before mass production, flexible MOQ from one-off to high volume, target-cost DFM, a single point of contact, and a vetted ISO 9000+ partner network managed end-to-end by P&A. No hand-offs, no surprises.
3 easy steps to get started
Send us your spec
Share your heat load, envelope and drawing — or just the problem. One dedicated engineer reviews it and asks the right questions to pin down the thermal requirement.
Proposed design & quote
You promptly receive a proposed design and indicative pricing — typically within 48 hours — to review and comment on, both technical aspects and cost.
Samples & production
Free off-tool samples with quality-assessment reports. On approval, your order is produced through our partner network, inspected, packaged and shipped.
Applications
LED lighting & drivers · consumer electronics · telecom & data infrastructure · industrial power electronics & drives · energy storage & battery systems · medical devices.
Heat pipes are one part of our thermal and aluminium capability. Explore the aluminium design & fabrication hub, our custom heatsink manufacturer page, dedicated heatsink design & manufacture services and custom aluminium extrusions for fin stacks and cooler bodies.
Choosing the right heat pipe solution
A few early decisions shape every heat-pipe design — sharing this detail lets us quote and prototype faster:
| Wick type | Sintered works in any orientation, including against gravity; grooved is the low-cost choice when gravity assists or the run is horizontal; mesh is a flexible all-rounder. |
| Round vs flattened | Flattening increases contact area but derates capacity by roughly 10–30% depending on final thickness. Keep flat sections short and specify the thickness early. |
| Bending | Each 90° bend costs roughly 5–10% of capacity. Keep bend radius at 3× pipe diameter or more where the envelope allows. |
| Heat pipe vs vapor chamber | Heat pipes move heat from point to point; vapor chambers and embedded-pipe spreader plates spread small, intense sources across large fin areas. |
| Orientation | If the evaporator must sit above the condenser, say so in the RFQ — it drives the wick choice and the whole design. |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed design and price:
- Heat load (W) — per pipe and total for the assembly
- Heat-source size and location, maximum source temperature and ambient range
- Mechanical envelope, routing and mounting — a drawing or STEP file is ideal
- Orientation in service and airflow (natural convection or forced, with CFM)
- Target cost and annual volume or call-off pattern
- Any reference design or physical sample
Working from a reference part or a sample is fine — our engineer will analyse it and design a drop-in equivalent to your specification.
📄 Download the heat pipe RFQ checklist & selection quick reference (PDF)
Get a quote
Send your drawing, spec or thermal problem and one dedicated engineer will reply — typically within 48 hours — with a proposed design and indicative pricing. No project too big or too small.
One dedicated engineer reviews every enquiry and replies with a proposed design and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au