3/8" x 7/8" x 50 ft Insulated Copper Tubing for HVAC | Heavy-Duty Refrigerant Line Set Supplier

High-quality pre-insulated copper tubing designed for mini split, ductless AC, and refrigerant line installations — engineered for superior thermal efficiency and long-lasting performance.

Installation Tips for Optimal Performance

Plan Line Routing Before Installation

Measure the total length between indoor and outdoor units and design a clear path for the tubing to avoid sharp bends and ensure efficient refrigerant flow.

Maintain Proper Insulation Integrity

Ensure the insulation remains intact during handling and installation to prevent gaps, which could reduce thermal performance and increase condensation risk.

Avoid Excessive Bends and Kinks

Bends should be gradual to maintain refrigeration system efficiency and avoid potential damage to the copper tubing or insulation during installation.

The insulated copper tubing is twin already. So buy it now.

Product Overview – Premium Insulated Copper Tubing for HVAC Systems

This 3/8″ x 7/8″ x 50 ft insulated copper tubing combines durable copper with factory-applied insulation, providing reliable performance for HVAC, heat pump, and mini split installations where temperature control and condensation prevention are essential.

Factory-Insulated Copper Tube for Thermal Protection

• Includes a 3/8″ liquid line and 7/8″ suction line bundled in a 50 ft pre-insulated set.

• Insulation reduces thermal loss and prevents condensation for improved system efficiency.

UV-Resistant and Weather-Ready Insulation

• The factory-applied insulation is UV-resistant and weather-durable, making it suitable for both indoor and outdoor installations.

• Insulation helps protect copper tubing from environmental exposure, extending service life.

High-Quality 99.9% Copper for HVAC Applications

• Made from 99.9% pure copper conforming to HVAC industry standards, ensuring excellent heat transfer and corrosion resistance.

• Ideal for use in mini split AC systems, heat pumps, and other refrigerant line requirements.

Key Features & Benefits

Long 50 ft Length for Flexible Installations

The 50 ft length accommodates a wide variety of installation distances, making it a versatile choice for residential and commercial HVAC setups.

Compatible With Modern Refrigerants

This insulated copper tubing is suitable for systems using R410A, R32, and other common refrigerants, meeting performance requirements for high-pressure HVAC applications.

Easy to Install with Pre-Insulated Design

Pre-insulated tubing eliminates the need for field insulation wraps, saving installation time and reducing labor costs while ensuring consistent insulation quality.

99.9% Pure Copper

White PE Insulated Pipe

Plastic Cap

Features of pipe insulation tubing:

Machines for the production of thermal insulation pipes

warehouse for insulation pipes

Inner Layer Insulated Pipe

Technical Specifications

• Model: (If applicable: DBJ-xxx or other)

• Length: 50 ft (15.24 m)

• Line Sizes: 3/8″ (liquid line), 7/8″ (suction line)

• Material: 99.9% pure copper tubing

• Insulation: Factory-applied UV-resistant insulation

• Applications: Mini split, ductless air conditioners, heat pumps, HVAC systems

3/8" x 7/8" x 50 ft Insulated Copper Tubing for HVACR Applications Wholesaler & Supplier

DABUND PIPE in-house tested insulate copper pipe and tubing is designed to make installation simple and quick – saving you time and money on each job.

Insulated Copper Tubing

1/4 + 3/8 AC line set used for 0.75TON - 1.0TON mini split air conditioner.

1/4 + 1/2 Mini split line set used for 1.5TON - 2.0TON mini split air conditioning.

1/4 + 5/8 Copper line set used for 2.0TON - 2.5TON split air conditioner system.

3/8 + 5/8 Insulated copper tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.

3/8 + 3/4 Insulated copper tubing used for 4.5TON - 6.0TON split air conditioner installation.

3/8 + 7/8 Insulated copper pipe apply for 6.0TON - 8.0TON ductless mini split air conditioner.

Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.

Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.

1/4 + 5/8 Insulated copper tubing used for 2P and 2.5air conditioner system.

3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.

3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.

3/8 + 7/8 Insulated copper pipe apply for 6P - 8p TON ductless mini split air conditioner.

1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.

All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.

3/8 + 3/4 Insulated copper tubing used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Insulated copper pipe apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.

Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.

High quality copper line set 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.

1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.

3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.

3/8 + 3/4 Insulated copper tubing used for 54K and 72K split air conditioner installation.

3/8 + 7/8 Insulated copper pipe apply for 72K - 96K ductless mini split air conditioner.

Why Choose This Insulated Copper Tubing?

Built for Reliability and Efficiency

Manufactured with premium copper and high-quality insulation, this tubing enhances system performance, minimizes energy loss, and supports long-term reliability for HVAC applications.

Designed for Professional Installations

Pre-insulated and easy to handle, this tubing is ideal for HVAC contractors and experienced installers who require consistent quality and performance.

DABUND FACTORY

We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts

SGS Certificate

Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21

Exhibition

We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.

FAQ

1.What Is Insulated Copper Tubing?

Insulated copper tubing is copper pipe that comes with factory-applied thermal insulation. It is widely used in HVAC, mini split, and refrigeration systems to transport refrigerant while reducing heat loss, preventing condensation, and improving overall system efficiency.

2.What Is Insulated Copper Tubing Used For?

Insulated copper tubing is commonly used for:

• Mini split and ductless air conditioner installations

• Heat pump refrigerant line connections

• Residential and commercial HVAC systems

• Refrigeration and cooling applications

It connects indoor evaporators and outdoor condenser units safely and efficiently.

3.What Are the Benefits of Insulated Copper Tubing?

Key advantages include:

• Reduced energy loss and improved thermal efficiency

• Condensation prevention and moisture control

• Faster installation with no field insulation required

• Cleaner and more professional appearance

• Longer service life compared to non-insulated copper pipes

4.What Type of Copper Is Used in Insulated Copper Tubing?

High-quality insulated copper tubing is made from 99.9% pure copper, typically meeting HVAC standards such as ASTM B280 and C12200, ensuring excellent thermal conductivity, corrosion resistance, and durability.

5.What Insulation Materials Are Used on Insulated Copper Tubing?

Common insulation materials include:

• Closed-cell polyethylene (PE) foam

• Rubber foam insulation

These materials are designed to be moisture-resistant, flexible, and stable under temperature changes.

6.Is Insulated Copper Tubing Suitable for Outdoor Use?

Yes. Most insulated copper tubing is manufactured with UV-resistant and weather-durable insulation, making it suitable for both indoor and outdoor HVAC installations.

7.Does Insulated Copper Tubing Prevent Condensation?

Yes. The insulation keeps the pipe surface temperature above the dew point, effectively preventing condensation, water dripping, and potential mold or structural damage.

8.What Sizes Are Available for Insulated Copper Tubing?

Insulated copper tubing is available in many common HVAC sizes, including:

• 1/4″, 3/8″, 1/2″ liquid lines

• 5/8″, 3/4″, 7/8″ suction lines

Standard lengths include 15 ft, 25 ft, 30 ft, 50 ft, and custom lengths.

9.Is Insulated Copper Tubing Compatible with R410A and R32 Refrigerants?

Yes. Insulated copper tubing is designed to handle the pressure and temperature requirements of modern refrigerants such as R410A, R32, and other HVAC refrigerants.

10.Is Insulated Copper Tubing Easy to Install?

Yes. Factory-applied insulation eliminates the need for on-site insulation wrapping, reducing installation time and labor costs. The tubing is flexible enough for bending and routing during installation.

11.Can Insulated Copper Tubing Be Used for Mini Split Systems?

Absolutely. Insulated copper tubing is the standard solution for mini split and ductless air conditioner systems, providing reliable refrigerant flow and thermal protection.

12.How Thick Is the Insulation on Insulated Copper Tubing?

Insulation thickness varies by application and environment, typically ranging from 8 mm to 25.4 mm, allowing installers to choose the best option for different climate conditions.

13.Can Insulated Copper Tubing Be Customized?

Yes. Many manufacturers offer customization options, including:

• Custom tube diameters and lengths

• Different insulation materials and thicknesses

• OEM branding and private labeling

• Custom packaging for distributors and wholesalers

14.Why Choose Insulated Copper Tubing Over Non-Insulated Copper Pipe?

Insulated copper tubing improves energy efficiency, reduces condensation risk, speeds up installation, and offers better long-term protection — making it a more reliable and cost-effective choice for HVAC and refrigeration systems.