3. PVC platic pipe is coverd whole aluminum pipe, to protect the aluminum pipe not to be wet, keep the good qualiy.
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DBJ-003
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DABUND
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Copper
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1M - 10M
Material
Color
Keywords
Application
25 Ft 1/4" x 3/8" Insulated Copper Aluminum Line Set
DABUND 25 Ft 1/4" x 3/8" Insulated Copper Aluminum Line Set is designed for compatible split air conditioner installations requiring 1/4" and 3/8" refrigerant piping.
The current product length is 25 ft, approximately 7.62 m. The nominal tube outside diameters are 1/4" and 3/8", equivalent to approximately 6.35 mm and 9.52 mm.
The pipe construction combines copper connection sections at both ends with a 1070-grade aluminum main tube. According to the current product information, each copper end section is approximately 15 cm long, while the main section uses flexible aluminum tubing protected by a PVC covering.
Quick Answer: This product is a 25 ft / 7.62 m copper-aluminum refrigerant line set with 1/4" + 3/8" tube sizes for compatible split AC installations.
Compatibility Notice: Confirm that the exact air conditioner permits copper-aluminum refrigerant piping and requires 1/4" + 3/8" tube sizes before ordering. Pipe material, dimensions and allowable installation length must follow the equipment manufacturer's requirements.
25 Ft 1/4" x 3/8" Copper Aluminum Pipe Specifications
| Product Type | Insulated Copper Aluminum AC Line Set |
| Tube Size | 1/4" + 3/8" |
| Metric Outside Diameter | Approx. 6.35 mm + 9.52 mm |
| Length | 25 ft / approx. 7.62 m |
| Current Listed Insulation | 1/2" insulation according to current page information |
| Main Pipe Material | 1070-grade aluminum according to current product information |
| Copper End Sections | Approx. 15 cm copper section at each end according to current product information |
| Copper Reference | ASTM B280 / C12200 DHP referenced for copper tubing |
| Aluminum Protection | PVC protective covering |
| Insulation Options in Product Range | White PE embossed insulation / Black Rubber insulation |
| Application | Compatible split AC installations |
Copper Aluminum Pipe Construction
Copper Connection Ends
Both ends of the refrigerant pipe use copper tube sections. Current product information lists approximately 15 cm of copper tubing at each end.
The copper sections provide the connection areas of the copper-aluminum pipe assembly.
1070-Grade Aluminum Main Tube
The main pipe section is identified as 1070-grade aluminum in the current product information.
The aluminum section provides a flexible pipe structure for routing during compatible split air conditioner installation.
PVC Protective Covering
The aluminum pipe section is covered by PVC according to the current product description. This covering helps protect the aluminum surface from direct moisture exposure during normal transportation and installation.
25 Ft Installation Length
At approximately 7.62 m, the 25 ft line provides a medium-length connection option for compatible split air conditioner installations.
Aluminum Pipe
Copper-Aluminum Connection
Copper Aluminum Pipe
Insulation Options
The broader DABUND Copper Aluminum Pipe range is shown with White PE embossed insulation and Black Rubber insulation.
The current page identifies the 25 ft 1/4" + 3/8" product with 1/2" insulation. Confirm the exact insulation material and thickness for the ordered configuration.
White PE Embossed Insulation
Black Rubber Insulation
White PE Embossed Insulation Structure
PE Outer Layer
The White PE insulation configuration uses an embossed PE outer layer described in the current product information as wear resistant and UV resistant.
IXPE Foam Middle Layer
The middle layer is described as IXPE foam with a dense cellular structure for thermal insulation, impact absorption and moisture resistance.
Closed-Cell Inner Layer
The inner layer uses a closed-cell structure intended to reduce heat transfer and moisture penetration.
Black Rubber Insulated Copper Aluminum Pipe
Black Rubber insulation is another configuration shown within the DABUND Copper Aluminum Pipe range. Closed-cell insulation is intended to reduce heat transfer and help control condensation around refrigerant piping.
The original product information contains conflicting material and temperature descriptions for some insulation configurations. The exact insulation material, thickness, working-temperature range and applicable test documentation should therefore be confirmed for the ordered version.
Available Copper Aluminum Pipe Sizes
The current SKU is a 25 ft 1/4" + 3/8" configuration. The broader Copper Aluminum Pipe range also includes multiple tube-size combinations, lengths and insulation thickness options.
| Tube Size | General Length Options | Insulation Thickness Options | Listed Flame-Resistant Options |
| 1/4 + 3/8 | Current SKU: 25 ft / 7.62 m; general range: 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 1/2 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 5/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 5/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 3/4 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/2 + 3/4 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 7/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
Is 1/4" x 3/8" Compatible With My Split AC?
The 1/4" + 3/8" pipe combination is used by selected split air conditioning systems.
The current product information associates this tube combination with some approximately 9,000–12,000 BTU systems. This is a general reference only because actual refrigerant pipe sizing varies by air conditioner manufacturer and model.
Always confirm the required liquid-line and suction-line dimensions in the exact equipment installation manual before ordering.
25 Ft Line Set Installation Considerations
Confirm the Required Pipe Sizes
Verify that the split AC system requires 1/4" and 3/8" outside-diameter refrigerant tubing.
Confirm Copper-Aluminum Pipe Compatibility
Confirm that the air conditioner manufacturer permits copper-aluminum refrigerant piping and that the pipe connection construction is suitable for the equipment.
Check Minimum and Maximum Piping Length
A 25 ft line is approximately 7.62 m. Confirm that this falls within the minimum and maximum refrigerant piping lengths permitted by the equipment manufacturer.
Check Vertical Separation
If the indoor and outdoor units are installed at different elevations, confirm the maximum permitted vertical separation for the exact air conditioner.
Check Refrigerant Charging Requirements
Refrigerant charge requirements depend on the air conditioner manufacturer's specified standard piping length and installation instructions.
Split AC Installation Kit Components
The current product information also describes Copper Aluminum Pipe as part of a mini split installation kit configuration with related installation accessories.
| 1/4" + 3/8" Copper Aluminum Pipe | Current SKU: 25 ft / approx. 7.62 m |
| Communication Wire Cable | Listed within the installation-kit product description |
| Drain Hose | Listed within the installation-kit product description |
| Wall Pipe | Listed within the installation-kit product description |
| Wall Cover | Listed within the installation-kit product description |
Confirm the exact accessory package supplied with the ordered 25 ft configuration before purchase.
For HVAC Distributors and Installation Suppliers
DABUND supplies Copper Aluminum Pipe products to HVAC distributors, wholesalers, importers, installation-kit suppliers and professional contractors.
Different pipe-size combinations, lengths and insulation configurations allow professional buyers to select products according to local split AC models and market requirements.
OEM and ODM Copper Aluminum Line Sets
DABUND accepts OEM and ODM requirements for compatible Copper Aluminum Line Set configurations.
Multiple refrigerant pipe-size combinations
Different pipe lengths
White PE or Black Rubber insulation configurations
Multiple insulation thickness options
Installation accessory configurations
Product identification and private-label requirements
Why Choose DABUND Copper Aluminum Pipe?
HVAC Manufacturing Experience Since 2008
DABUND has manufactured HVAC piping and related components since 2008 for distributors, wholesalers and professional buyers in international markets.
Multiple Pipe Sizes and Lengths
The Copper Aluminum Pipe range includes multiple refrigerant pipe combinations, pipe lengths and insulation thickness options for different split AC installation requirements.
B2B and Private-Label Supply
Product configuration and identification requirements can be discussed for distributor, OEM and private-label orders.
DABUND Factory
DABUND produces Copper Aluminum Pipe, insulated copper pipe, mini split line sets and related HVAC products for international B2B customers.
Insulation Testing and Product Documentation
Current product information references ASTM E84, UL 94, ASTM D1056 and ASTM G21 for selected insulation configurations. Applicable reports, insulation materials and testing scope should be confirmed for the exact ordered product.
International HVAC Exhibitions
DABUND participates in international exhibitions to present Copper Aluminum Pipe, mini split line sets and related HVAC products to professional buyers.
Frequently Asked Questions
What size is this Copper Aluminum Line Set?
The current product is 1/4" + 3/8", equivalent to approximately 6.35 mm + 9.52 mm outside diameter.
How long is this Copper Aluminum Pipe?
The current SKU is 25 ft long, approximately 7.62 m.
Which sections of the pipe are copper?
According to the current product information, both ends use approximately 15 cm copper tube sections, while the remaining main section uses aluminum tubing.
What aluminum grade is used?
The current product information identifies the aluminum tube as 1070-grade aluminum.
Why is the aluminum tube covered with PVC?
The PVC covering is intended to help protect the aluminum pipe from direct moisture exposure during normal transportation and installation.
What insulation does the 25 ft pipe use?
The current page identifies the 25 ft 1/4" + 3/8" product with 1/2" insulation. The broader product range includes White PE and Black Rubber insulation configurations, so the exact material should be confirmed when ordering.
What AC capacity commonly uses 1/4" x 3/8" piping?
The current product information associates 1/4" + 3/8" piping with some approximately 9,000–12,000 BTU systems. This is only a general reference because pipe sizing varies by manufacturer and model.
Can I choose this line set only by BTU capacity?
No. Confirm the exact liquid-line and suction-line dimensions specified by the air conditioner manufacturer.
Can copper aluminum piping be used with every mini split AC?
No. Confirm that the exact air conditioner manufacturer permits copper-aluminum refrigerant piping before installation.
Is 25 ft suitable for every 1/4" x 3/8" system?
No. Even when the pipe sizes match, the allowable minimum and maximum refrigerant piping lengths depend on the exact HVAC equipment.
What other pipe sizes are available?
The broader product range lists 1/4" + 3/8", 1/4" + 1/2", 1/4" + 5/8", 3/8" + 5/8", 3/8" + 3/4", 1/2" + 3/4" and 3/8" + 7/8" combinations.
Can DABUND provide OEM or ODM Copper Aluminum Line Sets?
Yes. OEM and ODM requirements can be discussed according to pipe size, length, insulation configuration, accessories and product identification requirements.
Can I get samples before placing a bulk order?
Yes. According to the current product information, DABUND can provide three sample pieces, with the buyer covering express shipping costs. View sample information.
What payment terms are available?
Available payment methods can include T/T, L/C at sight and credit card. Final terms depend on the commercial agreement.
What delivery terms are available?
Available international trade terms can include EXW, FOB, CFR and CIF.
What is the typical delivery time?
Current product information lists a typical delivery period of approximately 15–20 days. Actual lead time depends on order quantity, specification, customization and production schedule.
