The 35 ft 3/8″ × 5/8″ insulated copper pipe is designed for efficient refrigerant transfer in HVAC, mini split, and heat pump systems. Manufactured from 99.9% pure copper tubing, this pre-insulated line set ensures excellent thermal performance, corrosion resistance, and long service life for both residential and commercial air conditioning installations.

With factory-applied insulation and precision-flared ends, the copper pipe helps HVAC installers complete projects faster while maintaining reliable system performance.

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

Product Overview – 35 ft HVAC Insulated Copper Line Set

This HVAC insulated copper pipe provides a ready-to-install refrigerant line for connecting indoor and outdoor air conditioning units.

Key Product Details

• Liquid Line Size: 3/8″

• Suction Line Size: 5/8″

• Length: 35 ft (10.7 m)

• Material: 99.9% pure copper tubing

• Ends: Pre-flared with flare nuts

• Application: HVAC, mini split AC, heat pump systems

This insulated copper tubing is widely used in split air conditioning installations, ductless systems, and refrigeration applications.

High-Quality Copper Tubing for Reliable HVAC Performance

ASTM Standard Copper Material

The copper pipe is manufactured using high-purity copper meeting ASTM B280 and C12200 standards, ensuring durability, pressure resistance, and excellent thermal conductivity for refrigerant transport.

Benefits of Pure Copper Tubing

• Superior heat transfer efficiency

• Excellent corrosion resistance

• Long service life in HVAC systems

• Reliable performance under high refrigerant pressure

Copper remains the preferred material for professional HVAC installations.

Advanced Multi-Layer Insulation Protection

High-Density Insulation Structure

The pipe features a multi-layer insulation system designed to maintain refrigerant temperature and prevent energy loss.

Insulation Layer Structure

Outer Layer:
UV-resistant embossed PE film protects against weather and abrasion.

Middle Layer:
IXPE foam insulation provides thermal stability and shock absorption.

Inner Layer:
Closed-cell insulation structure prevents moisture penetration and condensation.

This design provides excellent heat insulation, waterproof protection, and durability for long-term outdoor HVAC installations.

Features of pipe insulation tubing:

Key Advantages of the 35 ft Insulated Copper Pipe

Improved Energy Efficiency

Pre-insulated tubing reduces thermal loss in refrigerant lines, helping air conditioning systems operate more efficiently and maintain stable cooling performance.

Faster HVAC Installation

Pre-flared ends and factory insulation eliminate additional preparation steps, saving installation time and labor costs.

Durable for Outdoor and Indoor Applications

The UV-resistant insulation and corrosion-resistant copper tubing ensure reliable operation even in harsh environmental conditions.

HVAC System Applications

Compatible HVAC Equipment

This insulated copper pipe is commonly used for:

• Mini split air conditioner systems

• Split air conditioning units

• Heat pump installations

• Refrigeration equipment

• Residential and commercial HVAC systems

Typical System Capacity

The 3/8″ + 5/8″ line size is typically used for 3–4 ton mini split or ductless air conditioning systems.

Technical Specifications

Refrigeration Copper Pipe

Size	Length	Insulation White PE	Flame Resistant
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	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

1/4 + 3/8 Refrigeration 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 Refrigeration 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 Refrigeration 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 Refrigeration copper pipe apply for 72K - 96K ductless mini split air conditioner.

Why Choose DABUND Insulated Copper Pipes

Professional HVAC Manufacturer

DABUND has been producing HVAC copper tubing and accessories since 2008, offering stable supply capacity and consistent product quality.

Global Supply & OEM Support

• OEM / ODM customization available

• Multiple insulation thickness options

• Fast sample delivery

• Exported to HVAC distributors worldwide

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.Q:What is your payment terms?

A:TT,L/C AT SIGHT,CREDIT CARD etc

2.Q:What is your delivery terms?

A:EXW, FOB, CFR, CIF etc

3.Q:Are you trading company or manufacturer?

A:Manufacturer

4.Q:May I get a sample?

A:Yes, we can send you 3pieces free samples.

   You just charge for the express cost is ok.

5.Q:Can I print my logo?

A:Yes of cause, we accept OEM and ODM.

6.Q:How long is your delivery time?

A:Usually 15-20days, if urgent, we can arrange to do in advance and delivery fast.

7.Can the insulated copper pipe be cut during installation?

Yes. The pipe can be cut to the required length using standard HVAC tubing cutters. After cutting, the end should be properly flared to ensure a leak-free connection.

8.Is the insulation suitable for outdoor installation?

Yes. The insulation includes UV-resistant and moisture-resistant materials designed for outdoor HVAC applications.

9.What refrigerants are compatible with this copper pipe?

This insulated copper pipe is compatible with common HVAC refrigerants such as R410A, R32, and R22 when used within proper system specifications.