1/2" x 3/4" x 75 ft Pre-Insulated Copper Pipe – Long-Length HVAC Line Set Supplier

Looking for a reliable HVAC line set for extended installations?
The Dabund brand 1/2" x 3/4" x 75 ft pre-insulated copper pipe is engineered for commercial air conditioning systems, ductless mini splits, and industrial refrigeration applications.

Made with 99.9% pure copper and factory-applied insulation, this line set ensures stable refrigerant flow, reduced energy loss, and long-term durability—even in demanding environments.

What Is a 75 ft Pre-Insulated Copper Pipe?

A 75 ft pre-insulated copper pipe is designed for HVAC systems requiring longer distances between indoor and outdoor units.

It includes:

• 1/2" liquid line

• 3/4" suction line

• Factory-applied insulation layer

Ideal for large homes, commercial buildings, and rooftop installations.

Why Choose Dabund Brand Pre-Insulated Copper Pipe?

 ✔ 17+ Years HVAC Manufacturing Experience

Dabund has been manufacturing HVAC components since 2008, ensuring stable quality and global supply reliability.

 ✔ 99.9% Pure Copper (ASTM Certified)

• Meets ASTM B280 & C12200 standards

• Excellent thermal conductivity

• Strong corrosion resistance

✔ High Pressure Resistance (2100–7000 PSI)

Designed for modern refrigerants like R410A, exceeding standard HVAC requirements.

What Makes a High-Quality Long HVAC Line Set?

A premium long-distance line set should include:

• High-purity copper (≥99.9%)

• Thick insulation with UV resistance

• Stable diameter for long runs

• High pressure tolerance

• Minimal leakage risk

Dabund products are designed to maintain performance over extended 75 ft installations.

Key Features of Dabund 75 ft 1/2" x 3/4" Copper Line Set

Extended 75 ft Length for Flexible Installation

• Ideal for large buildings and rooftop systems

• Reduces need for connectors and joints

• Minimizes leakage risks

High-Capacity Twin Pipe Design

• 1/2" liquid line

• 3/4" suction line

Supports high refrigerant flow for commercial HVAC systems.

Multi-Layer Insulation System

• Outer layer: UV-resistant PE film

• Middle layer: IXPE foam

• Inner layer: closed-cell insulation

Provides excellent thermal insulation, waterproofing, and durability.

Wide Temperature Range

• Operating temperature: -40°C to 120°C

• Suitable for extreme climates

Flame-Retardant & Certified

• Meets ASTM E84, UL94, ASTM D1056

• Safe for commercial HVAC applications

Best Line Set Size for 4.5–6 Ton HVAC Systems

The 1/2" x 3/4" copper line set is typically used for:

• 4.5–6 ton systems

• 54,000–72,000 BTU air conditioners

Perfect for commercial and large residential HVAC installations.

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.

Applications of Dabund Pre-Insulated Copper Pipe

Commercial HVAC Systems

Designed for large-scale installations requiring high refrigerant flow.

Industrial Refrigeration Systems

Ensures stable cooling performance under heavy loads.

Central Air Conditioning Systems

Ideal for long-distance piping layouts in centralized systems.

Why 75 ft Line Sets Improve Installation Efficiency

Using a 75 ft line set helps:

• Reduce the number of pipe connections

• Lower installation time and labor costs

• Improve system reliability

• Enable flexible equipment placement

Fewer joints = lower leak risk + higher system efficiency.

Technical Specifications

How to Choose the Right HVAC Line Set Supplier

When selecting a supplier, consider:

• Manufacturing experience

• Product certifications

• Production capacity

• Customization capability

• Delivery reliability

✅ Dabund brand advantages:

• Factory-direct pricing

• Strict quality control

• OEM & ODM support

• Strong global logistics

Pre-insulated Copper Pipe

1/4 + 3/8 Pre-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 piping 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.

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 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 pipeg 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 Pre-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 Pre-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.

Dabund Manufacturing Advantages

Large Production Capacity

• 2 factories

• High monthly output

• Fast delivery (15–20 days)

OEM & ODM Customization

• Logo printing

• Custom insulation thickness

• Packaging customization

Global Export Experience

Dabund supplies customers worldwide with stable quality and reliable shipping.

Why Global Buyers Choose Dabund Line Sets

Dabund is trusted worldwide because it offers:

• Consistent product quality

• Competitive factory pricing

• Reliable delivery timelines

• One-stop HVAC sourcing

Helping buyers reduce procurement risk and improve efficiency.

Packaging & Delivery

• Standard export packaging

• Custom packaging available

• Delivery time: 15–20 days

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.Q: What system is this line set suitable for?
A: Suitable for 4.5–6 ton (54,000–72,000 BTU) HVAC systems.

8.Q: Is this suitable for long-distance installation?
A: Yes, 75 ft is ideal for extended layouts and large buildings.

9.Q: What insulation is used?
A: UV-resistant PE or polypropylene insulation with flame-retardant properties.

10.Q: Can I customize the product?
A: Yes, Dabund supports OEM & ODM customization.