50 ft 1/4" x 1/2" Pre Insulated Copper Tube

50 Ft 1/4" x 1/2" Pre-Insulated Copper Tube

DABUND 50 ft 1/4" x 1/2" pre-insulated copper tube is a paired HVAC refrigerant line set designed for compatible mini split air conditioners, heat pumps, split AC systems and refrigeration applications. The two copper tubes are supplied with factory-applied insulation to simplify installation and reduce the need for separate field insulation.

The line set combines a 1/4" copper tube and a 1/2" copper tube, equivalent to approximately 6.35 mm and 12.70 mm outside diameter. The total coil length is 50 ft, approximately 15.24 m, providing a continuous refrigerant piping solution for HVAC installations that require more routing distance than shorter line sets.

The copper tubing uses C12200 DHP copper for air-conditioning and refrigeration applications, with ASTM B280 specifications available according to the ordered configuration. White PE insulation is available in multiple thicknesses for different HVAC markets and project requirements.

Quick Answer: This product is a 50 ft / 15.24 m pre-insulated HVAC copper line set containing 1/4" and 1/2" copper tubing, equivalent to approximately 6.35 mm and 12.70 mm.

Compatibility Notice: Refrigerant tube dimensions and permitted piping length vary by HVAC manufacturer and model. Always confirm that the equipment requires 1/4" and 1/2" copper tubing and supports the required line length before installation.

50 Ft 1/4" x 1/2" Copper Line Set Specifications

Key Features of the 50 Ft Pre-Insulated Copper Tube

C12200 Copper for HVACR Applications

DABUND uses C12200 DHP copper tubing for air-conditioning and refrigeration applications. The copper material provides the formability, thermal conductivity and corrosion resistance required for professional refrigerant piping installations.

ASTM B280 Copper Tubing Specification

ASTM B280 copper tubing specifications are available according to the ordered configuration. HVAC distributors and project buyers can confirm required tube dimensions, wall thickness and technical specifications before placing an order.

1/4" x 1/2" Paired Refrigerant Tubing

The paired line set contains 1/4" and 1/2" outside-diameter copper tubing, corresponding to approximately 6.35 mm and 12.70 mm. The final piping configuration must match the exact specifications of the connected HVAC equipment.

50 Ft Continuous Coil

The 50 ft continuous coil provides approximately 15.24 m of refrigerant piping. Where permitted by the HVAC manufacturer, a continuous line can reduce the need to connect multiple shorter copper sections and provides greater routing flexibility around walls, ceilings and structural obstacles.

Factory-Applied White PE Insulation

Factory-applied insulation helps provide consistent coverage around the copper tubing, reduce field insulation work and support thermal and condensation control during HVAC operation.

Multiple Insulation Thickness Options

White PE insulation can be supplied in multiple thicknesses including 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm according to project, climate and target-market requirements.

OEM Insulation Printing

DABUND supports customized insulation printing for OEM customers. Company name, copper tube size, coil length and other product information can be printed according to customer requirements.

High-Purity Copper Tubing

White PE Insulated Pipe

Protective Plastic Cap

Three-Layer PE Insulation Structure

The white PE insulation uses a multilayer structure designed to provide thermal protection, moisture resistance and mechanical protection around the copper refrigerant tubing.

Insulation Tubing Production

Insulated Pipe Warehouse

Closed-Cell Inner Layer

Outer Protective PE Layer

The embossed outer PE layer helps provide wear resistance and protect the insulation during handling, transportation and installation. UV-resistant material options are available according to product specification.

Middle IXPE Foam Layer

The middle foam layer uses a dense closed-cell structure designed to reduce heat transfer, resist moisture penetration and absorb external impact.

Closed-Cell Inner Insulation Layer

The inner insulation layer surrounds the copper tubing and helps reduce thermal transfer and condensation when the correct insulation thickness is selected and properly installed.

HVAC Pipe Insulation Performance

• Closed-cell construction helps reduce moisture penetration.

• Low thermal conductivity helps reduce heat transfer.

• Factory-applied insulation provides consistent coverage.

• UV-resistant insulation options are available.

• Multiple insulation thicknesses are available.

• Selected specifications support temperatures from approximately -40°C to 120°C.

Available insulation configurations include testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21 according to the original product information. Buyers should confirm the exact insulation grade and test documentation required for their destination market.

When Should You Choose a 50 Ft 1/4" x 1/2" Line Set?

A 50 ft pre-insulated line set is useful when the indoor and outdoor HVAC equipment require a moderate piping distance and shorter 10 ft, 20 ft or 25 ft coils do not provide enough routing length.

Typical installations may require copper tubing to pass through walls, ceilings, attics, mechanical spaces or around structural obstacles before reaching the outdoor condenser or heat pump.

Using one continuous 50 ft coil can reduce the need for intermediate connections compared with joining several shorter copper sections, provided that the HVAC equipment manufacturer permits the required refrigerant piping length.

Installers should also confirm minimum and maximum piping length, equivalent length, vertical separation, bend limits and any additional refrigerant charge required for longer installations.

50 Ft Copper Line Set for HVAC Wholesalers

DABUND supplies pre-insulated copper tubing to HVAC wholesalers, distributors, importers, refrigeration contractors, project suppliers and private-label brands. The 50 ft configuration provides a practical inventory option for customers serving residential and light-commercial HVAC installations.

OEM and ODM services can include customized copper tube dimensions, coil lengths, insulation thickness, insulation printing, company branding and export packaging.

For distributors managing multiple HVAC product specifications, DABUND also manufactures a range of paired copper tube combinations and longer coil lengths.

Available Pre-Insulated Copper Tube Sizes

DABUND manufactures multiple paired copper tube sizes, insulation thicknesses and coil lengths for HVAC and refrigeration applications.

Is a 1/4" x 1/2" Line Set Compatible With My HVAC System?

A 1/4" x 1/2" copper line set is used by certain mini split air conditioners and heat pump systems, but the correct refrigerant tube size cannot be selected only according to BTU capacity or nominal tonnage.

The 1/4" copper tube has an outside diameter of approximately 6.35 mm, while the 1/2" tube has an outside diameter of approximately 12.70 mm. Verify that these exact dimensions match the specifications of the indoor and outdoor equipment.

Some HVAC systems in common residential capacity ranges may use 1/4" x 1/2" tubing, but equipment manufacturers can specify different tube sizes for systems with similar capacities. Always follow the installation manual for the exact model.

Also confirm maximum and minimum line length, equivalent piping length, vertical separation, insulation thickness and any additional refrigerant charge required for a 50 ft installation.

Refrigerant piping, pressure testing, evacuation, brazing, flaring and refrigerant charging should be performed by qualified HVAC personnel according to local regulations and equipment manufacturer instructions.

OEM Pre-Insulated Copper Tube Manufacturer

DABUND has manufactured insulated copper tubing, mini split line sets and HVAC components since 2008. Products are supplied to HVAC wholesalers, distributors, importers, contractors and private-label brands.

Available OEM and ODM options include:

• Customized copper tube combinations

• Customized coil lengths

• Customized insulation thickness

• Company name and specification printing

• Customized insulation configurations

• Private-label cartons and export packaging

• Bulk production for HVAC distributors and wholesalers

Why Choose DABUND Pre-Insulated Copper Tubing?

• HVAC copper tubing manufacturing experience since 2008

• C12200 DHP copper for air-conditioning and refrigeration applications

• ASTM B280 tubing specifications available

• Factory-applied insulation

• Multiple paired copper tube sizes

• Multiple insulation thicknesses and coil lengths

• OEM insulation printing and private-label services

• Bulk supply for HVAC wholesalers and distributors

DABUND Factory

DABUND manufactures insulated copper pipes, mini split line sets, aluminum pipes and 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. Buyers should confirm the exact insulation grade, product specification and required test documentation for their destination market.

International HVAC Exhibitions

DABUND participates in international exhibitions to present pre-insulated copper tubing, mini split line sets and HVAC products to distributors, importers, contractors and industry buyers.

Frequently Asked Questions

What is a 50 ft 1/4" x 1/2" pre-insulated copper tube?

It is a paired HVAC refrigerant line set containing 1/4" and 1/2" copper tubing with factory-applied insulation. The total coil length is approximately 50 ft or 15.24 m.

What are the metric sizes of 1/4" and 1/2" copper tubing?

A 1/4" copper tube has an outside diameter of approximately 6.35 mm, while a 1/2" copper tube has an outside diameter of approximately 12.70 mm.

How long is a 50 ft HVAC line set in meters?

50 ft is approximately 15.24 meters.

Why choose a 50 ft copper line set?

A 50 ft line set provides additional routing flexibility when shorter coils are not long enough. A continuous 50 ft line may also reduce the need for intermediate joints when permitted by the HVAC equipment manufacturer.

Can every mini split use a 50 ft refrigerant line?

No. Maximum and minimum refrigerant piping lengths vary by HVAC manufacturer and model. Check the equipment installation manual before purchasing or installing a 50 ft line set.

Is a 1/4" x 1/2" line set suitable for every mini split?

No. Refrigerant line dimensions vary by equipment model. Always verify that the HVAC system specifically requires 1/4" and 1/2" outside-diameter copper tubing.

What copper material does DABUND use?

DABUND uses C12200 DHP copper for air-conditioning and refrigeration applications, with ASTM B280 tubing specifications available according to the ordered configuration.

What insulation thicknesses are available?

White PE insulation options include 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm depending on the required product specification.

Does the insulation help reduce condensation?

Yes. Closed-cell insulation helps reduce moisture penetration and surface condensation when the appropriate insulation thickness is selected and correctly installed.

Can DABUND print my company name on the insulation?

Yes. OEM printing can include company name, copper tube size, length and other product information according to customer requirements.

Can DABUND customize other copper tube sizes and lengths?

Yes. DABUND supplies multiple paired copper tube combinations including 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", with multiple lengths available.

Can I get samples before placing a bulk order?

Yes. DABUND provides sample support for product evaluation. You can visit the free sample page for more information.

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 order and commercial agreement.

What delivery terms are available?

Available international trade terms can include EXW, FOB, CFR and CIF. Buyers can confirm the preferred Incoterm when requesting a quotation.

What is the typical production lead time?

Standard production lead time is typically around 15–20 days according to the current product information. Actual lead time depends on order quantity, customization requirements, material availability and production schedule.