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DBJ-003
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DABUND
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Copper
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1M - 50M
Material
Color
Keywords
Application
50 Ft 1/2" x 3/4" Pre-Insulated Copper Line Set
DABUND 50 ft 1/2" x 3/4" pre-insulated copper line set is designed for compatible air-conditioning, heat pump, commercial HVAC and refrigeration systems that require these exact refrigerant pipe dimensions. The paired copper tubing is supplied with factory-applied insulation for faster installation and reliable thermal protection.
The line set combines a 1/2" copper tube and a 3/4" copper tube, equivalent to approximately 12.70 mm and 19.05 mm outside diameter. The total coil length is 50 ft, approximately 15.24 m.
On compatible HVAC equipment, the 1/2" tube commonly functions as the liquid line and the 3/4" tube as the suction or gas line. Final pipe sizing must always follow the indoor and outdoor equipment manufacturer's installation specifications.
Quick Answer: This product is a 50 ft / 15.24 m pre-insulated HVAC copper line set with 1/2" and 3/4" outside-diameter copper tubing, available with PE or black rubber insulation for compatible HVACR applications.
Compatibility Notice: Do not select a refrigerant line set only by tonnage or BTU capacity. Confirm the required liquid-line diameter, suction-line diameter, permitted line length, refrigerant type, insulation specification and vertical separation in the equipment installation manual.
50 Ft 1/2" x 3/4" Copper Line Set Specifications
| Parameter | Details |
|---|---|
| Brand | DABUND |
| Product Type | Pre-Insulated Copper Tube / HVAC Refrigerant Line Set |
| Liquid Line | 1/2" OD / approx. 12.70 mm on compatible equipment |
| Suction Line | 3/4" OD / approx. 19.05 mm on compatible equipment |
| Length | 50 ft / approx. 15.24 m |
| Copper Material | 99.9% copper / C12200 according to specification |
| Copper Tube Standard | ASTM B280 specification available |
| Insulation Options | PE insulation / black rubber insulation |
| Insulation Thickness Options | 8 mm / 9 mm / 10 mm / 13 mm / 19 mm / 25.4 mm |
| Selected Insulation Temperature Range | Approx. -40°C to 120°C depending on insulation specification |
| Applications | Compatible split AC, heat pump, commercial HVAC and refrigeration systems |
| OEM / ODM | Pipe size, length, insulation, printing and packaging customization |
Key Features of the 50 Ft Insulated Copper Line Set
1/2" Liquid Line and 3/4" Suction Line
The paired configuration provides 1/2" and 3/4" outside-diameter copper tubing. On compatible equipment, the smaller tube commonly serves as the liquid line and the larger tube as the suction or gas line.
Because HVAC manufacturers may specify different line sizes for systems with similar nominal capacities, always verify both dimensions against the exact equipment model before ordering.
50 Ft Continuous Copper Tubing
The 50 ft / 15.24 m continuous coil provides additional routing flexibility for installations where indoor and outdoor equipment are positioned farther apart. Where permitted by the equipment manufacturer, continuous tubing can reduce the need for intermediate refrigerant-line joints.
C12200 Copper for HVACR Applications
The copper tubing is manufactured from high-purity copper, with C12200 and ASTM B280 specifications available according to the ordered configuration. The material provides good formability, thermal conductivity and corrosion resistance for professional HVAC refrigerant piping.
Factory-Applied Insulation
Factory-applied PE or black rubber insulation helps reduce field preparation, thermal transfer and surface condensation while protecting the copper tube during handling and installation.
Multiple Insulation Thickness Options
Multiple insulation thicknesses are available for different climates, project specifications and destination markets. Buyers can confirm insulation material and thickness before bulk production.
OEM Printing and Private-Label Supply
DABUND supports insulation printing, product identification and private-label packaging for HVAC distributors, wholesalers, importers and brands.
High-Purity Copper Tubing
Black Rubber Insulation
Protective Plastic Caps
Black Rubber Pipe Insulation Features
Closed-cell black rubber insulation helps reduce thermal transfer and moisture penetration around refrigerant piping. The insulation also helps control condensation on cold refrigerant lines when the correct thickness is selected and all insulation joints are properly sealed.
Closed-cell structure for moisture resistance
Thermal insulation for HVAC refrigerant piping
Condensation-control performance
Flexible construction for easier routing
UV-resistant material options available
Selected insulation specifications from approximately -40°C to 120°C
PE and Multi-Layer Insulation Options
PE insulation configurations are also available according to the required product specification. Depending on the selected material, insulation may include a protective outer layer, high-density foam and a closed-cell inner structure.
Thermal Protection
Insulation helps reduce unwanted heat transfer between the refrigerant tubing and surrounding environment, supporting stable HVAC operation when the system is correctly designed.
Moisture and Condensation Resistance
Closed-cell insulation helps reduce water-vapor penetration and surface condensation, which is particularly important on cold suction lines and in humid environments.
UV Protection
UV-resistant insulation configurations are available for projects that include outdoor refrigerant piping. Additional protective line covers can be used where required by installation conditions.
Insulation Testing Options
Available insulation specifications include testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21 according to the selected material and product configuration. Buyers should confirm the exact applicable test report before ordering.
When Should You Choose a 50 Ft 1/2" x 3/4" Line Set?
A 50 ft insulated copper line set is useful where shorter coils do not provide enough distance between indoor and outdoor HVAC equipment. Typical projects may route refrigerant piping through walls, ceilings, mechanical rooms or around structural obstacles.
The larger 1/2" and 3/4" tube combination may be specified on certain higher-capacity HVAC, heat pump or refrigeration systems, but capacity alone does not determine the correct line size.
Before selecting this product, verify the equipment manufacturer's specified liquid and suction line diameters, maximum actual and equivalent piping length, vertical lift, insulation requirements and refrigerant charging instructions.
Installation Considerations for a 50 Ft HVAC Line Set
Confirm Both Refrigerant Pipe Diameters
Confirm that the equipment specifically requires approximately 12.70 mm and 19.05 mm outside-diameter copper tubing. Do not substitute a different line size based only on nominal system capacity.
Check Maximum Line Length
Verify that the HVAC system permits the required 50 ft / 15.24 m refrigerant route. The allowable maximum varies by equipment manufacturer and model.
Check Vertical Separation
If the indoor and outdoor units are located at different elevations, confirm the manufacturer's maximum permitted vertical separation.
Confirm Additional Refrigerant Requirements
Some systems include a factory refrigerant charge only for a specified standard piping length. Longer installations may require additional refrigerant according to the manufacturer's charging procedure.
Protect and Support the Insulated Tubing
Long horizontal and vertical runs should be properly supported to reduce sagging, vibration and mechanical stress. Protect insulation where the line passes through walls or other structural openings.
Applications of the 1/2" x 3/4" Copper Line Set
Commercial HVAC Systems
Suitable for compatible commercial HVAC installations where the equipment manufacturer specifies 1/2" and 3/4" refrigerant tubing.
Heat Pump Systems
Can be used with compatible heat pump equipment requiring this paired refrigerant line size and appropriate insulation.
Split Air-Conditioning Systems
Suitable for larger split-system installations when the indoor and outdoor equipment specifications call for 1/2" and 3/4" refrigerant lines.
Refrigeration Applications
Can be supplied for compatible refrigeration applications where tube dimensions, wall thickness, insulation and pressure requirements match the system design.
Why Correct HVAC Line Set Sizing Matters
Refrigerant line sizing affects pressure drop, refrigerant velocity, oil return and overall HVAC performance. A line set that is too large or too small for the equipment can affect system operation.
Supports correct refrigerant velocity
Helps control pressure drop
Supports proper oil return where applicable
Helps maintain designed system capacity
Supports long-term compressor and system reliability
50 Ft Copper Line Set for HVAC Distributors
DABUND supplies insulated copper tubing to HVAC wholesalers, distributors, importers, contractors, engineering companies and private-label brands requiring bulk refrigerant line-set supply.
The 50 ft 1/2" x 3/4" configuration provides an additional stocking option for customers serving compatible larger HVAC and refrigeration equipment.
Available Insulated Copper Tubing Sizes
| Size | Available Length | Black Rubber Insulation | Flame-Resistant Options |
| 1/4 + 3/8 | 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 1/2 | 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 5/8 | 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 5/8 | 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 3/4 | 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/2 + 3/4 | 50 ft / 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 7/8 | 15m / 20m / 25m / 30m / 50m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
Line Set Size and HVAC Capacity Reference
The following ranges are general market references only. HVAC manufacturers may specify different refrigerant pipe sizes for equipment with similar capacities, so the installation manual for the exact model must always be used for final sizing.
| Line Set Size | Common Market Reference | Typical Application |
|---|---|---|
| 1/4 + 3/8 | Often found on smaller split systems | Small split AC applications |
| 1/4 + 1/2 | Often found on small-to-medium systems | Mini split and heat pump applications |
| 1/4 + 5/8 | Often found on medium systems | Split AC and heat pump applications |
| 3/8 + 5/8 | Used on selected larger equipment | Commercial and larger split systems |
| 3/8 + 3/4 | Used on selected high-capacity systems | Large split HVAC applications |
| 1/2 + 3/4 | Equipment-specific; verify manufacturer requirements | Compatible large HVAC / refrigeration systems |
| 3/8 + 7/8 | Used on selected high-capacity equipment | Large commercial HVAC applications |
OEM and Custom Insulated Copper Line Sets
DABUND supports OEM and ODM supply for HVAC distributors, importers, contractors and private-label brands.
Custom copper pipe combinations
Custom coil lengths
PE or black rubber insulation options
Custom insulation thickness
Company name and specification printing
Private-label packaging
Bulk production for wholesalers and project buyers
Why Choose DABUND as Your HVAC Line Set Supplier?
HVAC Manufacturing Experience Since 2008
DABUND has manufactured HVAC components since 2008, supplying insulated copper pipe, mini split line sets, aluminum pipe and related HVAC products for international customers.
Bulk Production Capability
Bulk production is available for HVAC distributors, wholesalers, contractors and project buyers requiring repeat orders or multiple line-set specifications.
OEM and ODM Support
Copper tube size, insulation thickness, printed identification and packaging can be customized according to commercial requirements.
Export Packaging
Standard and customized export packaging is available according to product configuration, order quantity and customer requirements.
Production and Delivery
Current product information lists typical delivery at approximately 15–20 days. Actual lead time depends on quantity, material configuration, OEM requirements and production schedule.
DABUND Factory
DABUND manufactures insulated copper pipe, mini split line sets, aluminum pipe and other HVAC components for international B2B customers.
SGS Testing and Insulation Standards
Available insulation specifications include testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21 according to the selected material configuration. Confirm the exact applicable test report for the ordered product.
International HVAC Exhibitions
DABUND participates in international HVAC exhibitions to present insulated copper tubing, refrigerant line sets and HVAC products to distributors, importers and professional buyers.
Frequently Asked Questions
What is a 50 ft 1/2" x 3/4" insulated copper line set?
It is a paired HVAC refrigerant line set containing 1/2" and 3/4" outside-diameter copper tubing with factory-applied insulation. The total length is approximately 50 ft or 15.24 m.
What are the metric sizes of 1/2" and 3/4" copper tubing?
A 1/2" copper tube has an outside diameter of approximately 12.70 mm, while a 3/4" tube has an outside diameter of approximately 19.05 mm.
Which pipe is the liquid line and which is the suction line?
On compatible equipment, the 1/2" tube commonly serves as the liquid line and the 3/4" tube as the suction or gas line. The equipment manufacturer's piping diagram should always be the final reference.
What HVAC system size uses a 1/2" x 3/4" line set?
This combination is used by some larger HVAC and refrigeration systems, but no universal tonnage or BTU range applies to every manufacturer. Confirm the required pipe dimensions for the exact equipment model.
Can I select the line set based only on BTU capacity?
No. Refrigerant line size depends on equipment design, refrigerant type, piping length, vertical separation and manufacturer requirements. Similar-capacity systems can require different tube sizes.
Why choose a 50 ft line set?
A 50 ft line set provides more routing flexibility when shorter coils are insufficient. A continuous coil may also reduce intermediate connections where the HVAC manufacturer permits the required piping length.
Can every HVAC system use a 50 ft refrigerant line?
No. Maximum and minimum refrigerant piping lengths vary by manufacturer and model. Always confirm the installation limits before ordering or installing the line set.
Does a 50 ft installation require additional refrigerant?
It may. Some HVAC systems are factory-charged only for a specified standard line length. Follow the manufacturer's instructions to determine whether additional refrigerant is required.
What insulation materials are available?
DABUND can supply PE insulation and black rubber insulation according to the required product specification.
What insulation thicknesses are available?
Available thicknesses include 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm depending on the ordered insulation configuration.
Can DABUND customize the copper line set?
Yes. OEM and ODM options include copper tube combinations, coil length, insulation material, insulation thickness, printed identification and private-label packaging.
Can I get samples before placing a bulk order?
Yes. Sample support is available for product evaluation. According to the current product information, DABUND can provide sample pieces while the buyer covers express shipping costs.
What payment terms are available?
Payment terms can include T/T, L/C at sight, credit card and other agreed methods depending on the commercial order.
What delivery terms are available?
Available international trade terms can include EXW, FOB, CFR and CIF according to the buyer's logistics requirements.
What is the typical delivery time?
Current product information lists a typical delivery time of approximately 15–20 days. Actual timing depends on order quantity, product specification, customization and production schedule.
Who should install this refrigerant line set?
Refrigerant piping, pressure testing, evacuation, connection and charging should be completed by qualified HVAC personnel according to local requirements and the equipment manufacturer's instructions.
