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APKorder(moq):
200m each sizePayment:
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Shanghai, NingboAPK Warm Air Ducting Tube is a flexible, lightweight duct hose designed for warm air transfer in diesel heater systems, vehicle air ducting, boats, caravans, machinery compartments and auxiliary heating installations. The APK construction combines an aluminum inner layer, a paper center layer and a plastic film outer layer to provide good flexibility, heat reflection and easy installation in confined spaces.
This APK warm air ducting tube is commonly used for heater air inlets, heater outlets, ventilation connections and warm air routing where a bendable duct is required. It can be cut to the required length, routed around equipment and connected to heater outlets, air boxes, vents or duct adapters.
Anhui Parker New Material Co., Ltd supplies APK ducting in multiple inside diameters from 6 mm to 140 mm. Custom length, packaging and alternative constructions are available for diesel heater suppliers, vehicle conversion companies, marine equipment distributors, HVAC component suppliers and industrial air ducting users.
APK ducting is a three-layer warm air duct tube. In this construction, A refers to the aluminum heat-reflective layer, P refers to the paper layer, and K refers to the plastic film layer. The combination gives the duct hose a balance of flexibility, lightweight handling and heat resistance for warm air movement.
The aluminum layer helps reflect heat and supports warm air transfer. The paper layer gives structure and shape retention. The plastic outer layer improves handling and surface protection during installation. This structure is widely used in compact heating systems where the duct must bend, compress and pass through limited installation space.
APK warm air ducting tube is used where warm air must be transferred from a heater, blower or ventilation unit to another location. It is especially suitable for applications requiring flexible routing and easy installation.
| Application | Function |
|---|---|
| Diesel heater air ducting | Transfers warm air from the heater outlet to cabins, compartments or vehicle interiors. |
| Boats and marine heaters | Used for flexible warm air routing in marine heating and ventilation systems. |
| Caravans and RVs | Supports warm air distribution in compact vehicle heating layouts. |
| Vehicle air systems | Used as flexible air ducting for heater, ventilation and auxiliary air transfer systems. |
| Industrial machinery | Routes warm air, exhaust air or ventilation air around equipment and machine compartments. |
| Printing and copy machines | Used for controlled air supply or exhaust in equipment ventilation systems. |
| Dryers and air exhaust systems | Provides a flexible duct connection for warm air exhaust or air transfer. |
| Item | Specification |
|---|---|
| Product Name | APK Warm Air Ducting Tube |
| Part Number | HPT-APK |
| Construction | APK: aluminum + kraft paper + plastic film |
| Material | Aluminum, paper and plastic film |
| Size Range | ID 6 mm to 140 mm |
| Working Temperature | -40°C to +343°C depending on installation and working conditions |
| Flammability | VW-1 |
| Melting Point | +537°C |
| Standard Color | Black |
| Standard Length | Custom length available |
| MOQ | 100 meters each size |
| Cutting Tool | Scissors or suitable cutting tool |
| Customization | Custom diameter, length, material construction, packaging and fire-resistant paper option |
Besides APK construction, we can also supply other flexible ducting structures according to temperature, flexibility, flame resistance and application requirements.
| Part Number | Construction | Material Structure | Size Range |
|---|---|---|---|
| HPT-APK | APK | Aluminum + kraft paper + plastic film | 6-140 mm |
| HPT-PAK | PAK | Kraft paper + aluminum + plastic film | 6-140 mm |
| HPT-PAP | PAP | Kraft paper + aluminum + kraft paper | 6-140 mm |
| HPT-KAK | KAK | Plastic film + aluminum + plastic film | 6-140 mm |
| HPT-APP | APP | Aluminum + kraft paper + kraft paper | 6-140 mm |
| HPT-AP | AP | Aluminum + kraft paper | 6-140 mm |
| HPT-3A | 3A | Three-layer aluminum | 6-140 mm |
| HPT-6A | 6A | Six-layer aluminum | 6-140 mm |
| HPT-A5P | A5P | Aluminum + five-layer kraft paper | 6-140 mm |
| HPT-AFA | AFA | Aluminum + fiberglass + aluminum | 6-140 mm |
| HPT-AAF | AAF | Aluminum + aluminum + fiberglass | 6-140 mm |
| HPT-FAA | FAA | Fiberglass + aluminum + aluminum | 6-140 mm |
APK construction is suitable when users need a practical warm air duct hose with good flexibility and easy handling. It is often selected for heater ducting because it can be compressed, bent and cut to the required length during installation.
To select the correct warm air ducting tube, confirm the required inside diameter, heater outlet size, air temperature, bending route, installation space and flame resistance requirement. For diesel heater systems, the duct should match the heater outlet and air vent connection to reduce air leakage and installation problems.
| Selection Factor | Recommendation |
|---|---|
| Inside Diameter | Match the heater outlet, air vent, adapter or connector size. |
| Temperature | Choose the structure according to actual warm air temperature and installation distance from the heat source. |
| Flexibility | Use APK or similar flexible construction for tight bends and compact routing. |
| Flame Resistance | Select standard paper or fire-resistant paper according to safety and application requirements. |
| Installation Length | Order custom cut length or full rolls depending on assembly and distribution needs. |
| Outer Surface | Black outer film is suitable for clean appearance and handling protection. |
We can supply APK warm air ducting tube and related air duct hose products according to drawings, samples or heater system requirements.
Please send the required inside diameter, length, quantity, working temperature, ducting structure and application. We can recommend the correct APK warm air ducting tube or alternative construction for diesel heaters, vehicle air systems, boats, caravans and industrial ventilation projects.
Product link: APK Warm Air Ducting Tube
APK warm air ducting tube is a flexible three-layer duct hose made with an aluminum inner layer, paper middle layer and plastic film outer layer. It is used for warm air transfer in heater, vehicle, boat, caravan and machinery applications.
APK refers to the material structure: A means aluminum, P means paper, and K means plastic film. This structure provides flexibility, heat reflection and practical surface protection.
It is commonly used for diesel heater air ducting, heater inlets and outlets, warm air transfer in boats and caravans, vehicle ventilation systems, dryer exhaust systems and industrial machinery air routing.
Yes. APK warm air ducting tube can be cut to the required length using scissors or a suitable cutting tool.
Standard sizes are available from ID 6 mm to 140 mm. Custom diameters and lengths can be supplied according to order requirements.
Yes. The paper layer can be supplied in standard grade or fire-resistant grade according to the required application.
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