Dabund Brand 30 ft 1/4" x 3/8" Insulated Copper Tube – Premium Mini Split Line Set Supplier

Looking for a reliable and easy-to-install HVAC line set?
The Dabund brand 30 ft 1/4" x 3/8" insulated copper tube is engineered for mini split air conditioners, refrigeration systems, and heat pump installations.

Manufactured with 99.9% pure copper and high-performance insulation, this line set ensures efficient refrigerant flow, long service life, and fast installation.

The Mini Split Installation Kit is twin already. So buy it now.

What Is an Insulated Copper Tube in HVAC Systems?

An insulated copper tube (also called a line set) is used to connect indoor and outdoor units in HVAC systems. It consists of:

• Liquid line (smaller pipe)

• Suction line (larger pipe)

• Insulation layer to prevent energy loss

It plays a critical role in maintaining system efficiency, preventing condensation, and ensuring stable refrigerant flow.

Why Choose Dabund Brand Insulated Copper Tube?

✔ 17+ Years HVAC Manufacturing Experience

Dabund has been producing HVAC components since 2008, with strong global export capability and stable quality.

✔ High Purity Copper (99.9%)

• Meets ASTM B280 & C12200 standards

• Ensures excellent thermal conductivity

• Reduces risk of leakage

✔ Pre-Flared Ends with Nuts

• Ready-to-install design

• Saves installation time

• Reduces labor costs

What Makes a High-Quality HVAC Line Set?

A premium insulated copper tube should have:

• High-purity copper (≥99.9%)

• Thick, closed-cell insulation

• UV and weather resistance

• Accurate pipe dimensions

• Pre-flared connections for easy installation

Dabund line sets are designed to meet all these professional requirements.

Key Features of Dabund 30 ft Insulated Copper Tube

Twin Copper Line Set (1/4" + 3/8")

• 1/4" liquid line

• 3/8" suction line

• 30 ft (9.14m) length—ideal for standard installations

### Multi-Layer Insulation Structure

• Outer layer: UV-resistant PE film

• Middle layer: High-density IXPE foam

• Inner layer: Closed-cell insulation

Provides thermal insulation, waterproofing, and shock resistance.

Flame-Retardant & Safety Certified

• Meets ASTM E84, UL94, ASTM D1056 standards

• SGS tested for safety and performance

Wide Temperature Range

• Working temperature: -40°C to 120°C

• Suitable for extreme environments

Best Line Set for Mini Split Air Conditioners

The best line set for mini split systems should be:

• Compatible with 9000–12000 BTU systems

• Pre-insulated for energy efficiency

• Easy to install with minimal tools

• Durable for long-term outdoor exposure

The Dabund 1/4" x 3/8" line set is specifically designed for 0.75–1.0 ton mini split systems, making it a top choice for installers.

99.9% Pure Copper

White PE Insulated Pipe

Copper Nut

Features of pipe insulation tubing:

Machines for the production of thermal insulation pipes

warehouse for insulation pipes

Inner Layer Insulated Pipe

Complete HVAC Installation Solution

This product can also function as a mini split installation kit, including:

• Insulated copper pipe

• Communication wire

• Drain hose

• Wall sleeve & cover

Everything you need for a clean, professional installation.

Why Insulated Copper Tubes Improve HVAC Efficiency

Insulated copper tubes help:

• Reduce energy loss

• Prevent condensation and water damage

• Maintain stable refrigerant temperature

• Improve overall system performance

Without proper insulation, HVAC systems lose efficiency and lifespan.

Applications of Dabund Insulated Copper Tube

Mini Split Air Conditioning Systems

Ideal for 9000–12000 BTU ductless systems.

Heat Pump Systems

Ensures efficient heat transfer and system stability.

Commercial HVAC Installations

Suitable for residential and light commercial applications.

Technical Specifications

How to Choose the Right Copper Line Set Supplier

When choosing a supplier, consider:

• Manufacturing experience

• Product certification

• Customization capability

• Delivery reliability

✅ Dabund brand offers:

• Factory-direct pricing

• Stable quality

• OEM & ODM services

• Fast global shipping

Dabund Manufacturing Advantages

Large Production Capacity

• 2 factories

• 1,000,000 pcs/month output

• Fast delivery (5 days sample, mass production ready)

OEM & ODM Customization

• Custom insulation thickness

• Logo printing

• Packaging solutions

Global Export Expertise

Regular shipments worldwide ensure stable supply chains.

Insulated Copepr Tube

1/4 + 3/8 Mini split installation kit 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 Mini Split Installation Kit 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.

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 Insulated copper tube used for 54000 BTU and 72000 split air conditioner installation.

3/8 + 7/8 Mini Split Installation Kit 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.

Mini Split Installation Kit 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 tube apply for 72K - 96K ductless mini split air conditioner.

Why Global Buyers Choose Dabund Line Sets

Dabund is preferred because it provides:

• Consistent product quality

• Competitive pricing

• Reliable delivery timelines

• One-stop HVAC product sourcing

This reduces procurement risk and increases project 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 size system is this line set for?
A: Suitable for 0.75–1 ton (9000–12000 BTU) mini split AC systems.

8.Q: Is the copper pre-flared?
A: Yes, both ends are pre-flared with nuts for easy installation.

9.Q: What insulation options are available?
A: White PE and black rubber with multiple thickness options.

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