1/4" x 3/8" x 100 ft Refrigeration Copper Pipe | Pre-Insulated HVAC Line Set for Mini Split Systems

Looking for a reliable and cost-effective copper line set for HVAC systems?
This 1/4" x 3/8" x 100 ft refrigeration copper pipe is designed for mini split air conditioners and refrigeration applications, delivering excellent performance, durability, and easy installation.

Ideal for 0.75–1 Ton (9,000–12,000 BTU) systems, it ensures efficient refrigerant flow and long-term system stability.

Key Features of 1/4" x 3/8" Refrigeration 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.

100 ft Long Refrigeration Copper Pipe for Flexible Installation

This 100 ft copper line set is perfect for:

• Long-distance HVAC installations

• Residential and light commercial systems

• Complex layouts requiring extended piping

Gives installers more flexibility without compromising efficiency

99.9% Pure Copper Tubing (ASTM B280 & C12200 Certified)

Manufactured using high-purity copper, this pipe offers:

• Superior thermal conductivity

• Excellent pressure resistance

• Leak-proof and durable performance

✔ Meets ASTM B280 & C12200 standards for HVAC use

Result: Higher cooling efficiency + longer lifespan

High Pressure Rating for R410A & R32 Refrigerants

Built to support modern HVAC systems:

• Pressure rating: 2100–7000 PSI

• Suitable for high-efficiency refrigerants

• Stable performance under demanding conditions

Far exceeds standard system requirements

Advanced Insulation for Energy Efficiency & Protection

This insulated copper pipe features:

• High-density closed-cell insulation

• Moisture and condensation resistance

• Stable thermal performance

✔ Working temperature: -40°C to 120°C

Keeps refrigerant temperature stable and reduces energy loss

Refrigeration Copper Pipe

1/4 + 3/8 Refrigeration 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 Refrigeration 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 piping 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 Refrigeration copper pipe used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Insulated copper 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 Refrigeration 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.

UV-Resistant & Fire-Rated Insulation for Outdoor Use

Engineered for durability:

• UV-resistant outer layer

• Flame-retardant (UL94, ASTM E84 compliant)

• Waterproof and corrosion-resistant

Ideal for both indoor and outdoor installations

Ideal Copper Line Set Size for Mini Split Systems (9K–12K BTU)

This configuration includes:

• 1/4" liquid line

• 3/8" suction line

Commonly used for:

• 0.75 Ton – 1 Ton systems

• 9,000 – 12,000 BTU mini split AC

• Residential HVAC installations

Ensures optimal refrigerant flow and system performance

Compatible with Multiple HVAC & Refrigeration Applications

Widely used in:

• Ductless mini split systems

• Heat pumps

• Central air conditioning systems

• Refrigeration units

One versatile solution for various HVAC needs

3-Layer Insulation Structure for Long-Term Durability

Advanced insulation design includes:

• Outer Layer: UV-resistant PE film

• Middle Layer: IXPE foam insulation

• Inner Layer: Closed-cell moisture barrier

✔ Waterproof
✔ Anti-corrosion
✔ Noise reduction
✔ Shock absorption

Built for long-term performance in harsh environments

Flexible Copper Tubing for Easy Installation

✔ Soft annealed copper for easy bending
✔ Twin-line design (liquid + suction line)
✔ Pre-insulated for faster setup

Saves installation time and labor cost

Full Size Range & Custom Length Options Available

We support customization for:

• Sizes: 1/4" – 1 1/8"

• Lengths: 15m / 20m / 25m / 30m / 50m / 100 ft

• Insulation thickness options

Perfect for OEM and wholesale projects

OEM & ODM Refrigeration Copper Pipe Manufacturer

Expand your HVAC business with:

• Private label branding

• Logo printing on insulation

• Custom packaging

• Bulk production support

Ideal for importers, distributors, and HVAC brands

Designed for Global HVAC Markets & Extreme Conditions

Suitable for:

• Tropical climates (humidity resistance)

• Desert environments (heat resistance)

• Coastal areas (corrosion protection)

Reliable performance worldwide

HVAC Line Set Size Selection Guide

• 1/4" + 3/8" → 9K–12K BTU (This Product)

• 1/4" + 1/2" → 12K–18K BTU

• 1/4" + 5/8" → 24K–30K BTU

• 3/8" + 5/8" → 36K–48K BTU

• 3/8" + 7/8" → 72K–96K BTU

Helps buyers quickly choose the right size

Reduce Installation Failures & Improve HVAC Efficiency

Using high-quality copper tubing helps:

✔ Prevent refrigerant leaks
✔ Improve cooling efficiency
✔ Reduce maintenance costs
✔ Extend system lifespan

Better materials = better system performance

Get a Quote for 1/4" x 3/8" x 100 ft Refrigeration Copper Pipe

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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

What is a 1/4" x 3/8" refrigeration copper pipe used for?

This copper pipe is used in HVAC systems to connect indoor and outdoor units, typically for 9,000–12,000 BTU (0.75–1 Ton) mini split air conditioners, ensuring efficient refrigerant flow.

Why is insulated copper tubing important in HVAC systems?

Insulated copper tubing reduces heat loss, prevents condensation, and improves energy efficiency while protecting the pipe from corrosion and environmental damage.

What standards should HVAC copper pipes meet?

High-quality copper pipes should meet ASTM B280 and C12200 standards, ensuring durability, pressure resistance, and compatibility with HVAC systems.

Is this copper pipe compatible with R410A and R32 refrigerants?

Yes. This pipe supports modern refrigerants like R410A and R32, thanks to its high pressure rating and durable copper construction.

What size AC system uses a 1/4" x 3/8" line set?

A 1/4" liquid line and 3/8" suction line is typically used for small-capacity systems (9K–12K BTU), making it ideal for residential mini split installations.

Can I customize the copper pipe length and insulation?

Yes. Manufacturers offer OEM & ODM services, allowing customization of length, insulation thickness, color, and branding for bulk orders.

What are the benefits of pre-insulated copper pipes?

Pre-insulated copper pipes:

• Save installation time

• Improve system efficiency

• Reduce condensation issues

• Lower overall installation costs

How long does a refrigeration copper pipe last?

A high-quality copper pipe can last 15–20 years or more, depending on installation quality and environmental conditions.