3/8" x 7/8" x 75 ft Insulated Copper Pipe for HVAC & Air Conditioning Systems

Looking for a high-performance HVAC line set for medium to large systems? This 3/8" x 7/8" x 75 ft insulated copper pipe is engineered for efficient refrigerant flow, durability, and long-distance installation. It’s the perfect solution for mini split systems, heat pumps, and central air conditioning projects.

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

Product Overview – 75 ft Pre-Insulated Copper Line Set

This premium HVAC copper line set combines high-quality copper tubing with factory-applied insulation, delivering a ready-to-install solution.

• Liquid Line: 3/8" (9.52 mm)

• Suction Line: 7/8" (22.22 mm)

• Length: 75 ft (22.86 meters)

• Material: 99.9% pure copper

• Structure: Twin insulated copper pipes

Designed to reduce installation joints and minimize refrigerant leakage risks.

Premium Copper Tubing – Built for Long-Term Performance

99.9% Pure Copper Meets ASTM Standards

Manufactured using high-purity copper that complies with ASTM B280 and C12200 standards, ensuring:

• Excellent thermal conductivity

• Strong corrosion resistance

• Long service life

This makes it ideal for professional HVAC and refrigeration systems.

High Pressure Resistance for Modern Refrigerants

With a pressure rating of 2100–7000 PSI, this copper pipe supports high-pressure refrigerants such as R410A, ensuring safe and stable system performance.

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

Advanced Insulation Technology for Energy Efficiency

UV-Resistant & Weatherproof Insulation

The insulation is made of high-density polypropylene or PE material, offering:

• UV resistance for outdoor use

• Flame retardancy (UL94 compliant)

• Temperature range from -40℃ to 120℃

Triple-Layer Insulation Structure

• Outer Layer: UV-resistant PE film

• Middle Layer: IXPE foam for insulation

• Inner Layer: Closed-cell airtight structure

This design ensures superior insulation performance and long-term durability.

Moisture & Condensation Protection

The closed-cell insulation prevents water penetration and condensation, protecting both the copper pipe and surrounding structures.

Insulated Copper Pipe

1/4 + 3/8 Insulated copper pipe 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 pipe 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.

Insulated copper pipe 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 pipe 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 pipe 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.

Key Benefits of 75 ft Insulated Copper Pipe

Ideal for Medium to Long Distance Installations

The 75 ft length is perfect for:

• Multi-story buildings

• Large residential HVAC systems

• Commercial air conditioning projects

Fewer connections mean improved reliability and fewer leak points.

Improve Energy Efficiency & Reduce Costs

Pre-insulated copper tubing minimizes heat exchange, helping your HVAC system operate efficiently and reduce energy consumption.

Easy Installation & Reduced Labor Time

Factory insulation eliminates the need for manual wrapping, allowing faster installation and lower labor costs.

Durable, Corrosion-Resistant & Long-Lasting

Copper’s natural resistance to corrosion ensures a lifespan of 15–20 years or more with proper installation.

HVAC Applications – Wide System Compatibility

This 3/8" + 7/8" insulated copper pipe is commonly used for:

• Ductless mini split systems

• Heat pump systems

• Central air conditioning systems

Typically suitable for 4–5 ton HVAC systems, depending on system design and requirements. (Industry usage supported by HVAC sizing standards and applications)

Technical Specifications

OEM Customization & Manufacturing Capabilities

Looking to expand your HVAC business?

We offer:

• Custom insulation colors (black / white)

• Logo printing on insulation

• Custom lengths (15m–50m+)

• OEM & ODM services

In-house insulation production ensures consistent quality and flexible customization.

Why Choose DABUND Insulated Copper Pipe?

• Over 15 years of HVAC manufacturing experience

• Full in-house production (copper + insulation)

• Strict international quality standards

• Competitive factory pricing

• Global export capability

DABUND provides a one-stop HVAC solution for contractors, distributors, and OEM buyers.

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 a 3/8" x 7/8" x 75 ft insulated copper pipe used for?

This size is commonly used for medium to large HVAC systems (typically 4–5 ton). It connects indoor and outdoor units and ensures efficient refrigerant circulation.

2.Why choose a 75 ft HVAC line set instead of shorter lengths?

A 75 ft line set reduces the number of joints required during installation, lowering the risk of refrigerant leaks and improving system reliability.

3.Is this copper pipe compatible with R410A refrigerant?

Yes, it supports high-pressure refrigerants like R410A due to its pressure rating of up to 7000 PSI and compliance with ASTM standards.

4.What type of insulation is used in this copper pipe?

The insulation is made of UV-resistant polyethylene or polypropylene foam with a closed-cell structure, providing thermal insulation, moisture resistance, and durability.

5.Can this insulated copper pipe be used outdoors?

Yes, the UV-resistant and weatherproof insulation makes it ideal for outdoor installations, protecting against sunlight, rain, and temperature changes.

6.What are the advantages of pre-insulated copper pipes?

Pre-insulated pipes save installation time, ensure consistent insulation quality, reduce energy loss, and prevent condensation issues.

7.Can I customize this copper pipe for my brand?

Yes, OEM and ODM services are available, including custom branding, insulation color, printing, and packaging.

8.How long does an insulated copper pipe last?

With proper installation, it can last over 15–20 years due to its corrosion resistance and durable insulation materials.