1/4" x 3/8" x 100 ft Insulated Copper Pipe

This premium 1/4" x 3/8" x 100 ft insulated copper pipe is engineered for HVAC refrigerant applications, including mini split air conditioners, heat pumps, and ductless systems. Designed for long-distance installations, it ensures efficient refrigerant flow, superior thermal insulation, and long-term durability.

1/4" x 3/8" Insulated Copper Pipe is two tubes tied together with insulating tape, unlike White Embossed Copper Tube, two tubes can be glued together. For the convenience of transportation, we will pack the tubes very neatly and beautifully. So buy it now.

Key Features of 1/4" x 3/8" Insulated Copper Pipe

1. 1/4" x 3/8" is the out dimension in inch. 6.35mm - 9.52mm is the out dimension in metric.

2. 99.9% Pure copper pipe meets ASTM B280 and C12200 standard.

3. AC Copper Size what we can do have following 1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1 1/8", length can do 15m 20m 25m 30m 50m.

4. Insulation is made of 1/2" Polypropylene & UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21. Working temperature from -40℃ to 120℃.

5. Works for every Air Conditioning & Refrigeration Application including Ductless mini-split, heat pump and Centralized Air Ducted Units.

6. Pressure Rating: 2100 to 7000 PSI, much more than required 700 PSI for R410.

7. Insulation we produce by ourself, can print your company name, size, meters etc.

Copper Tube: ASTM B280 & C12200 DHP

Insulation: High density closed cells polyethylene foam

Working Temperature: meets/exceeds ASTM C 1427-07

Surface burning characteristics: UL 94, top-rated for Surface Burning Characteristics – UL 723 Flame and Spread Index less than 25 and Smoke Development Index less than 50

Meets ASTM E84 for smoke and fire (25/50)

Superior tear resistance, UV resistant

99.9% Pure Copper

Black Rubber Insulated Pipe

Plastic Cap

Features of pipe insulation tubing:

● Pipe Insulation, Material Black Rubber, Temp Range -40 Degrees to 120 Degrees.

● The pipe insulation has a better function of moisture condensation. Insulation material is both the insulation layer and moisture-proof layer.

● There is no need to drop the water vapor permeation protective layer so that it has a better moisture condensation function.

Product Overview – 100 ft HVAC Insulated Copper Line Set

This HVAC copper line set includes a 1/4" liquid line and 3/8" suction line, pre-insulated for convenience and performance.

• Length: 100 ft (30.5m)

• Material: 99.9% pure copper

• Pre-insulated with UV-resistant foam

• Suitable for residential & commercial HVAC

Built to reduce thermal loss and improve system efficiency, it is ideal for extended refrigerant piping runs.

Key Features of 1/4" x 3/8" Insulated Copper Pipe

99.9% Pure Copper for Maximum Performance

Manufactured from high-purity copper meeting ASTM B280 and C12200 standards, this pipe delivers excellent thermal conductivity, corrosion resistance, and long service life.

High Pressure Resistance for Modern Refrigerants

Designed to handle pressures from 2100 to 7000 PSI, making it fully compatible with refrigerants like R410A and R32.

Factory-Applied Insulation for Energy Efficiency

The pre-installed insulation minimizes heat exchange and energy loss, ensuring optimal cooling efficiency and reducing operational costs.

UV & Weather Resistant Insulation

The outer insulation layer is UV-resistant and suitable for outdoor installations, protecting the copper tubing from environmental damage.

Technical Specifications

Copper Tube Dimensions

• Liquid Line: 1/4 inch (6.35 mm)

• Suction Line: 3/8 inch (9.52 mm)

Temperature & Insulation Range

• Working Temperature: -40°C to 120°C

• Insulation Material: Polypropylene / Rubber Foam

Compliance Standards

• ASTM B280

• ASTM E84

• UL94

• ASTM D1056

These certifications ensure safety, durability, and HVAC compatibility.

Insulated Copper Pipe

1/4 + 3/8 Insulated copper pipe used for 0.75TON - 1.0TON mini split air conditioner.

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

1/4 + 5/8 Insulated copper pipe 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 piping apply for 6.0TON - 8.0TON ductless mini split air conditioner.

Insulated copper pipe 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 line set 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 pipe 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 Piping 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.

Applications – Designed for Versatile HVAC Systems

This insulated copper pipe is widely used in:

• Mini split air conditioners

• Ductless HVAC systems

• Heat pump installations

• Residential & commercial HVAC projects

It supports efficient refrigerant transfer and stable system operation across various environments.

Benefits of Pre-Insulated Copper Tubing

Improved Energy Efficiency

Reduces heat transfer, maintaining refrigerant temperature and improving system performance.

Condensation Prevention

Prevents moisture buildup, protecting walls and ceilings from water damage.

Faster Installation & Lower Labor Cost

Factory insulation eliminates the need for additional wrapping, saving installation time.

Long-Term Durability

Corrosion-resistant copper combined with durable insulation ensures long service life.

Customization & OEM Support

We support OEM/ODM services including:

• Custom lengths (15m–50m or more)

• Logo printing on insulation

• Packaging customization

• Bulk supply for distributors

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 1/4" x 3/8" insulated copper pipe used for?

It is mainly used as a refrigerant line set in HVAC systems, connecting indoor and outdoor units in mini split air conditioners, heat pumps, and ductless systems.

2.Why is insulation important for copper refrigerant pipes?

Insulation reduces heat loss, prevents condensation, and improves overall HVAC system efficiency, especially in humid or outdoor environments.

3.Is this copper pipe compatible with R410A and R32 refrigerants?

Yes, this insulated copper pipe supports modern refrigerants like R410A and R32 due to its high pressure rating and compliance with HVAC standards.

4.What is the advantage of pre-insulated copper tubing?

Pre-insulated tubing saves installation time, reduces labor costs, and ensures consistent insulation quality compared to manual wrapping.

5.Can this 100 ft copper line set be used for long-distance HVAC installations?

Yes, the 100 ft length is ideal for extended installations where indoor and outdoor units are far apart, ensuring stable refrigerant flow.

6.What standards does this copper pipe meet?

It complies with ASTM B280, ASTM E84, UL94, and ASTM D1056, ensuring high quality and safety for HVAC applications.

7.Is the insulation suitable for outdoor use?

Yes, the insulation is UV-resistant and weatherproof, making it suitable for outdoor installations.

8.Can I customize the copper pipe for my brand?

Yes, OEM services are available, including custom lengths, branding, and packaging options.

9.How does copper compare to other materials for HVAC piping?

Copper offers superior thermal conductivity, corrosion resistance, and durability, making it the industry standard for refrigerant piping.