50 Ft 1/4" x 1/2" Insulated Copper Pipe for Split AC
DABUND 50 ft 1/4" x 1/2" Insulated Copper Pipe is a paired refrigerant copper line set designed for compatible split air conditioning, ductless HVAC and heat pump installations.
The two copper tube outside diameters are 1/4" and 1/2", equivalent to approximately 6.35 mm and 12.7 mm. The current product configuration uses Black Rubber insulation and has a total line length of 50 ft, approximately 15.24 m.
Current product information identifies the copper tubing as ASTM B280 / C12200 DHP. The paired tubes are bundled together for transportation, handling and HVAC installation.
Quick Answer: This product is a 50 ft / approximately 15.24 m insulated copper line set with 1/4" and 1/2" tubing and Black Rubber insulation for compatible split AC and heat pump systems.
Compatibility Notice: Confirm that the exact HVAC equipment requires 1/4" and 1/2" refrigerant tubing and permits approximately 50 ft / 15.24 m of piping before ordering.
50 Ft 1/4" x 1/2" Copper Line Set Specifications
| Product Type | Insulated Copper Pipe / Refrigerant Line Set |
| Copper Tube Size | 1/4" + 1/2" |
| Metric Outside Diameter | Approx. 6.35 mm + 12.7 mm |
| Length | 50 ft / approx. 15.24 m |
| Copper Specification | ASTM B280 / C12200 DHP according to current product information |
| Primary Insulation | Black Rubber |
| Listed Insulation Temperature Range | Selected configurations: approximately -40°C to 120°C |
| Applications | Compatible split AC, ductless HVAC and heat pump systems |
| OEM Printing | Company name, tube size and length identification available according to order requirements |
Key Features of the 50 Ft 1/4" x 1/2" Line Set
1/4" and 1/2" Copper Tube Pair
The line set contains 1/4" and 1/2" copper tubing, corresponding to approximately 6.35 mm and 12.7 mm outside diameter.
On compatible HVAC systems, the smaller tube commonly functions as the liquid refrigerant line while the larger tube commonly functions as the suction or gas return line. Always verify the equipment manufacturer's piping specification.
50 Ft / 15.24 m Installation Length
The 50 ft line length provides approximately 15.24 m of refrigerant piping for installations requiring more routing distance than shorter 20 ft, 25 ft, 30 ft or 35 ft configurations.
Because 50 ft is an extended installation length for many systems, check the maximum permitted piping length, vertical separation and refrigerant charging requirements of the exact equipment.
ASTM B280 / C12200 Copper Tubing
Current product information identifies the refrigerant copper tubing as C12200 DHP and references ASTM B280.
Black Rubber Insulation
The current 50 ft 1/4" x 1/2" product configuration is presented with Black Rubber insulation designed to reduce unwanted heat transfer and help control surface condensation around refrigerant piping.
Paired Line Set for Easier Handling
The two insulated copper tubes are bundled together as a paired line set for organized transportation, storage and installation.
OEM Identification Printing
Company name, copper tube size, length and related identification can be printed on the insulation according to OEM and private-label order requirements.

Copper Refrigerant Tubing

Black Rubber Insulation

Protective Plastic Cap
Black Rubber Insulation for HVAC Copper Pipe
The current product page primarily presents Black Rubber insulation for the 1/4" x 1/2" x 50 ft copper line set.
Thermal Insulation
Closed-cell insulation is designed to reduce heat transfer between refrigerant copper tubing and the surrounding environment.
Condensation Control
Properly installed insulation helps reduce moisture penetration and surface condensation around cold refrigerant piping.
Listed Operating Temperature Range
Current product information lists selected Black Rubber insulation configurations with a temperature range of approximately -40°C to 120°C.
Available Insulation Documentation
Current product information references testing or standards including ASTM E84, UL 94, ASTM D1056, ASTM G21, ASTM C1427 and UL 723 for selected insulation configurations. Buyers should confirm which reports apply to the exact insulation material ordered.

50 Ft Black Rubber Insulated Copper Line Set
This SKU combines approximately 15.24 m of paired 1/4" and 1/2" copper tubing with Black Rubber insulation for compatible split AC and HVAC installations.
The 50 ft length is particularly relevant where the indoor and outdoor units require a longer routing path than standard short-line installations.

Installation Considerations for a 50 Ft Line Set
Confirm 1/4" x 1/2" Refrigerant Pipe Sizes
Verify that the exact HVAC system specifies approximately 6.35 mm and 12.7 mm outside-diameter copper refrigerant tubing.
Check the Maximum Allowed Piping Length
Confirm that approximately 50 ft / 15.24 m falls within the minimum and maximum piping limits specified by the equipment manufacturer.
Check Equivalent Piping Length
Bends, fittings and routing conditions can affect equivalent refrigerant piping length. Follow the equipment manufacturer's long-line installation instructions where applicable.
Verify Vertical Separation
If the indoor and outdoor units are installed at different elevations, confirm the maximum permitted vertical separation or lift for the exact HVAC equipment.
Check Additional Refrigerant Requirements
Some HVAC systems include a factory refrigerant charge for only a specified piping length. A 50 ft installation may require additional refrigerant depending on the equipment manufacturer's instructions.
Confirm Copper Tube Wall Thickness and Pressure Requirements
Allowable working and test pressure depends on copper tube outside diameter, wall thickness, material specification and the selected product configuration. Confirm the applicable technical data before installation.
Is 1/4" x 1/2" Compatible With My Split AC?
The 1/4" x 1/2" copper pipe combination is used by selected split air conditioners and heat pump systems.
Some systems in approximately 12,000–18,000 BTU classes may use this tube combination, but this is only a general reference rather than a universal sizing rule.
Similar-capacity HVAC systems can require different refrigerant pipe sizes. Always verify the required liquid-line and suction-line dimensions in the equipment installation manual.
Available Insulated Copper Pipe Sizes
The current SKU is a 50 ft / approximately 15.24 m 1/4" x 1/2" Black Rubber insulated copper line set. The broader product range also includes multiple tube combinations, coil lengths and insulation thicknesses.
| Size | General Coil Length Range | Listed Insulation Thickness | Listed 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 | Current SKU: 50 ft / 15.24 m; general range: 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 | 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 |
Applications
The 50 ft 1/4" x 1/2" insulated copper line set can be used with compatible HVAC equipment where these exact refrigerant pipe dimensions and installation length are specified.
Compatible split air conditioning systems
Compatible ductless mini split systems
Compatible heat pump systems
HVACR installation projects
Residential and commercial HVAC installations
HVAC distributor and contractor supply
For HVAC Distributors and Project Buyers
DABUND supplies insulated copper pipe and refrigerant line sets to HVAC distributors, wholesalers, importers, contractors and project buyers.
The 50 ft 1/4" x 1/2" Black Rubber configuration is suitable for buyers requiring a defined 15.24 m line length rather than a general bulk coil specification.
OEM and Custom Insulated Copper Line Sets
DABUND supports OEM and ODM supply according to the required insulated copper line-set configuration.
Multiple copper tube size combinations
Different line lengths
Multiple insulation thickness options
Company-name printing
Pipe-size identification
Length or meter marking
Private-label requirements
Why Choose DABUND Insulated Copper Pipe?
HVAC Manufacturing Experience Since 2008
DABUND has manufactured HVAC components since 2008, supplying insulated copper pipe, mini split line sets and related HVAC products to international customers.
Multiple Copper Sizes and Lengths
The product range includes multiple copper tube combinations and line lengths for different HVAC distribution and installation requirements.
Custom Identification for B2B Orders
Product identification and printing requirements can be discussed for distributor, OEM and private-label orders.
DABUND Factory and Copper Line Set Packaging
DABUND produces insulated copper pipe, mini split line sets and related HVAC components 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 and material scope should be confirmed for the exact product being ordered.

International HVAC Exhibitions
DABUND participates in international exhibitions to present insulated copper pipe, mini split line sets and related HVAC products to distributors and professional buyers.

Frequently Asked Questions
What size is the 1/4" x 1/2" copper line set in millimeters?
The nominal outside diameters are approximately 6.35 mm for the 1/4" tube and 12.7 mm for the 1/2" tube.
How long is the copper line set?
This product is 50 ft long, equivalent to approximately 15.24 m.
What copper specification is used?
Current product information identifies the copper tubing as C12200 DHP and references ASTM B280.
What insulation is used on this 50 ft line set?
The current product page identifies and visually presents Black Rubber insulation for this 1/4" x 1/2" x 50 ft configuration.
Which tube normally serves as the liquid line?
On compatible HVAC equipment, the 1/4" tube commonly functions as the liquid line while the 1/2" tube commonly functions as the suction or gas return line. Confirm the exact system specification before ordering.
What HVAC capacity commonly uses a 1/4" x 1/2" line set?
Some systems in approximately 12,000–18,000 BTU classes may use this pipe combination, but actual refrigerant piping dimensions vary by manufacturer and model.
Can I choose the line set only by BTU capacity?
No. Always verify the required liquid and suction line outside diameters from the equipment manufacturer's installation manual.
Is a 50 ft line set suitable for every compatible 1/4" x 1/2" system?
No. The pipe dimensions may match while the equipment has a shorter maximum permitted refrigerant piping length. Confirm the allowed actual length, equivalent length and vertical separation.
Does a 50 ft refrigerant line require additional refrigerant?
It depends on the HVAC equipment. Some systems include a factory charge for only a specified standard line length. Follow the manufacturer's charging instructions for a 50 ft installation.
What pressure can the copper pipe handle?
Allowable working and test pressure depends on copper tube diameter, wall thickness, material specification and configuration. Confirm the applicable technical data for the exact product rather than using one pressure rating for every tube size.
Can DABUND print my company name on the insulation?
Yes. Current product information states that company name, tube size, length and related identification can be printed according to order 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.
Can DABUND provide OEM or ODM insulated copper pipe?
Yes. OEM and ODM supply is available according to the required copper size, length, insulation configuration and identification requirements.
What payment terms are available?
Available payment methods can include T/T, L/C at sight and credit card. Final payment 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 quantity, specification, customization and production schedule.