164 ft 3/8" x 5/8" Mini Split Long Line Set – Heavy-Duty Insulated Copper Pipe for Extended HVAC Installations

Need a reliable solution for long-distance HVAC installations? This 164 ft 3/8" x 5/8" mini split long line set is engineered for extended refrigerant piping, high-pressure performance, and superior insulation durability.

Designed for large-capacity mini split systems, VRF systems, and commercial HVAC projects, this line set ensures stable operation even in complex layouts.

The Mini Split Long Line Set is twin already. So buy it now.

Product Overview – Extra-Long Copper Line Set for HVAC & Refrigeration Systems

This long line set consists of twin copper pipes (liquid + suction line) pre-insulated to deliver efficient refrigerant transfer over extended distances.

Manufactured from 99.9% pure copper and compliant with ASTM B280 & C12200 standards, it guarantees excellent thermal conductivity, corrosion resistance, and long-term reliability.

Key Features of 164 ft 3/8" x 5/8" Mini Split Long Line Set

High-Purity 99.9% Copper for Maximum Efficiency

Premium-grade copper provides:

• Superior heat transfer performance

• Reduced energy loss

• Long service life

Think of it as a high-efficiency highway for refrigerant flow.

ASTM B280 & C12200 Certified Copper Tubing

Built to meet international HVAC standards:

• ASTM B280 refrigeration copper tubing

• C12200 DHP copper grade

Ensuring safe operation under high-pressure conditions.

High Pressure Rating (2100–7000 PSI)

Supports modern refrigerants such as:

• R410A

• R32

With pressure tolerance far exceeding standard HVAC requirements, ensuring leak-free reliability.

Extra-Long 164 ft Design for Complex Installations

Unlike standard line sets, this extended length is ideal for:

• Large buildings

• Multi-zone systems

• Long-distance indoor-to-outdoor connections

Perfect when installation flexibility is critical.

Standard Size for Medium-to-Large Systems

• Liquid Line: 3/8" (9.52 mm)

• Suction Line: 5/8" (15.88 mm)

Typically used for:

• 36,000 – 48,000 BTU systems

## Advanced 3-Layer Insulation Technology

### UV-Resistant & Flame-Retardant Insulation

The insulation meets:

• ASTM E84

• UL94

• ASTM D1056

• ASTM G21

Operating temperature range: -40°C to 120°C, suitable for extreme environments.

### Triple-Layer Insulation Structure

• Outer Layer: UV-resistant embossed PE film (anti-aging & wear-resistant)

• Middle Layer: IXPE foam (thermal barrier, impact resistant)

• Inner Layer: Closed-cell insulation (airtight & moisture-proof)

Works like a thermal armor, protecting system efficiency.

### Condensation & Energy Loss Prevention

This insulation helps:

• Prevent moisture buildup

• Reduce heat loss

• Improve overall HVAC efficiency

Result? Lower energy costs and longer system lifespan.

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

## Applications – Where This Long Line Set Performs Best

### Large Mini Split & Multi-Zone Systems

Ideal for systems requiring extended piping distances.

### VRF & Commercial HVAC Projects

Widely used in:

• Office buildings

• Hotels

• Shopping malls

### Industrial Refrigeration Systems

Reliable for:

• Cold storage

• Food processing

• Pharmaceutical environments

## Technical Specifications

• Product Name: Mini Split Long Line Set

• Size: 3/8" + 5/8"

• Length: 164 ft (50 m)

• Material: 99.9% Pure Copper

• Standard: ASTM B280 / C12200

• Pressure Rating: 2100–7000 PSI

• Temperature Range: -40°C to 120°C

• Insulation: UV-resistant PE / IXPE Foam

• Application: HVAC & Refrigeration Systems

Mini Split Line Set

1/4 + 3/8 AC line set 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 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 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 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 HVAC lineset 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 HVAC lineset 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.

## Why Choose This Long Line Set from a Professional Manufacturer?

### 15+ Years HVAC Manufacturing Experience

Produced by an experienced manufacturer specializing in:

• Insulated copper pipes

• Mini split line sets

• HVAC components since 2008

### In-House Insulation Production

Ensures:

• Consistent insulation quality

• Faster production cycles

• Custom branding capability

### OEM & Custom Branding Available

Customize:

• Logo printing

• Pipe marking

• Packaging

Perfect for distributors and wholesalers.

### Strong Global Supply Capability

• Weekly container shipments

• Stable export logistics

• Scalable bulk production

## Installation Tips for Long Line HVAC Systems

### Plan Line Routing for Efficiency

Keep the path as straight as possible to maintain refrigerant performance.

### Avoid Excessive Bends

Too many bends can reduce system efficiency—always follow manufacturer guidelines.

### Maintain Proper Support for Long Runs

Use brackets or supports to prevent sagging over long distances.

### Keep Pipe Ends Sealed

Prevents contamination and moisture ingress during installation.

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.What is a long line set used for?

It is used for HVAC installations where the distance between indoor and outdoor units exceeds standard lengths.

8.What system capacity is this size suitable for?

Typically used for 36,000–48,000 BTU systems.

9.Can this line set handle high-pressure refrigerants?

Yes, it supports R410A and R32 with pressure ratings up to 7000 PSI.

10.Is this suitable for outdoor installation?

Yes, thanks to UV-resistant insulation.

### Do you support OEM customization?

Yes, including logo printing and packaging customization.