3/4" x 1/2" x 50 ft Insulated Copper Tube – High-Performance HVAC Line Set Supplier

3/4" x 1/2" x 50 ft Insulated Copper Tube for HVAC Line Sets

The DABUND 3/4" x 1/2" x 50 ft insulated copper tube is a high-performance HVAC line set designed for air conditioning systems, heat pumps, refrigeration equipment, and commercial HVAC installations requiring stable refrigerant flow and long-distance piping.

Made from 99.9% pure copper and protected with durable PE or black rubber insulation, this insulated copper line set helps reduce heat loss, prevent condensation, support high-pressure refrigerant transmission, and improve long-term HVAC system reliability.

What Is a 3/4" x 1/2" Insulated Copper Tube?

A 3/4" x 1/2" insulated copper tube is a twin HVAC copper line set used to connect indoor and outdoor air conditioning or refrigeration units. It normally includes one larger suction line and one smaller liquid line, with both copper tubes protected by factory-applied insulation.

• 3/4" suction line for refrigerant return

• 1/2" liquid line for refrigerant supply

• 50 ft length for longer HVAC installation routes

• Pre-insulated structure for thermal protection and condensation control

• Suitable for medium-to-large air conditioning and refrigeration systems

Why Choose DABUND Insulated Copper Tube?

17+ Years HVAC Manufacturing Experience

DABUND has produced HVAC components since 2008, supplying insulated copper pipe, mini split line sets, aluminum pipes, and HVAC parts for global distributors, importers, contractors, and OEM brands.

99.9% Pure Copper for Stable HVAC Performance

The copper tubing is made from 99.9% pure copper, providing strong thermal conductivity, corrosion resistance, pressure resistance, and long service life for HVAC refrigerant line applications.

• Complies with ASTM B280 and C12200 copper tubing requirements according to product specification

• Excellent thermal conductivity for efficient refrigerant flow

• Good corrosion resistance for long-term HVAC use

• Suitable for air conditioning, heat pump, and refrigeration systems

High Pressure Resistance for Modern Refrigerants

The insulated copper tube is designed for high-performance HVAC systems and can support modern refrigerant applications when the pipe size, wall thickness, pressure rating, and installation requirements match the equipment specification.

What Makes a High-Quality HVAC Copper Line Set?

A premium HVAC copper line set should combine accurate pipe sizing, high-purity copper, durable insulation, strong pressure resistance, and consistent manufacturing quality. These factors directly affect refrigerant flow, energy efficiency, system stability, and installation lifespan.

• High-purity copper of 99.9% or above

• UV-resistant and moisture-resistant insulation

• Accurate line set sizing for correct refrigerant flow

• High pressure resistance for HVAC and refrigeration use

• Long service life in demanding indoor and outdoor environments

Key Features of DABUND 50 ft Insulated Copper Tube

Twin Pipe Configuration: 3/4" + 1/2"

The 3/4" + 1/2" twin pipe configuration is suitable for medium-to-large HVAC systems where higher refrigerant flow is required. The 50 ft length provides more flexibility for long-distance installation between indoor and outdoor units.

• 3/4" suction line

• 1/2" liquid line

• 50 ft length for flexible HVAC routing

• Suitable for large residential and commercial HVAC installation

Multi-Layer Insulation System

The insulation system helps protect the copper tube from heat exchange, condensation, moisture, UV exposure, and outdoor wear. It supports stable refrigerant temperature and improves system efficiency.

• Outer layer: UV-resistant PE film

• Middle layer: high-density foam insulation

• Inner layer: closed-cell insulation structure

Wide Temperature Range

The insulation material supports a working temperature range from -40°C to 120°C, making the copper line set suitable for hot, cold, humid, and outdoor HVAC installation environments.

Flame-Retardant and Certified Materials

The insulation can meet ASTM E84, UL94, ASTM D1056, and related fire and material performance requirements according to the selected specification. This helps improve installation safety in HVAC environments.

99.9% Pure Copper

Black Rubber Insulated Pipe

Plastic Cap Protection

Black Rubber Pipe Insulation Features

Black rubber insulation provides excellent moisture condensation protection. The insulation layer also works as a moisture-proof layer, reducing the need for an additional vapor permeation protective layer in many HVAC applications.

• Material: black rubber insulation

• Temperature range: -40°C to 120°C

• Strong moisture condensation resistance

• Combined insulation and moisture-proof performance

• Flexible structure for easier HVAC routing

Best Line Set Size for 4–6 Ton HVAC Systems

The 3/4" x 1/2" copper line set is commonly used for large HVAC equipment where higher refrigerant flow is required. It can be suitable for 4–6 ton systems and 48,000–72,000 BTU air conditioning units when the equipment manufacturer specifies this pipe size.

• 4 ton to 6 ton HVAC systems

• 48,000 BTU to 72,000 BTU air conditioning units

• Commercial HVAC installation

• Large residential air conditioning systems

Because line set size depends on the air conditioner model, refrigerant type, distance, elevation difference, and manufacturer requirements, installers should confirm the correct size before installation.

Applications of DABUND Insulated Copper Tube

Commercial HVAC Systems

Suitable for large-scale cooling and heating installations requiring stable refrigerant flow and long-distance copper piping.

Heat Pump Systems

Supports efficient heating and cooling transfer for compatible heat pump systems.

Central Air Conditioning Systems

Ideal for long-distance piping in central air conditioning projects and large residential HVAC applications.

Refrigeration Applications

Can be used in refrigeration systems where the copper size, insulation, pressure rating, and refrigerant compatibility match the system design.

Why Proper Line Set Size Matters in HVAC Systems

Correct HVAC copper line set sizing is critical for system efficiency and reliability. An undersized or oversized line set can affect refrigerant velocity, pressure drop, oil return, system capacity, and compressor life.

• Improves refrigerant flow efficiency

• Reduces unnecessary pressure loss

• Helps maintain system capacity

• Supports compressor protection and oil return

• Improves long-term HVAC performance

Technical Specifications

How to Choose the Right HVAC Copper Line Set Supplier

When selecting an HVAC copper line set supplier, buyers should evaluate manufacturing experience, material quality, product standards, production capacity, customization ability, delivery reliability, and export support.

• Manufacturing experience in HVAC copper line sets

• Copper material purity and tube consistency

• Insulation material performance and certification support

• Production capacity for bulk orders

• OEM and ODM customization capability

• Reliable packaging, delivery, and global shipping support

DABUND supports factory-direct pricing, strict quality control, OEM and ODM service, and global delivery for HVAC distributors, wholesalers, contractors, importers, and brand owners.

Insulated Copper Tubing Size Options

Line Set Size and HVAC Capacity Reference

DABUND Manufacturing Advantages

Large Production Capacity

• 2 factories for HVAC line set production

• High monthly output for bulk orders

• Fast delivery timelines for regular specifications

OEM and ODM Customization

• Custom copper pipe sizes

• Custom insulation thickness

• Logo printing on insulation

• Private label and packaging customization

• Bulk production for distributors and contractors

Global Export Experience

DABUND supplies global HVAC customers with consistent product quality, competitive pricing, reliable delivery, and one-stop HVAC line set solutions.

Packaging and Delivery

• Standard export packaging

• Custom packaging available

• Private label packaging for OEM buyers

• Typical delivery time: 15–20 days, depending on order quantity and specification

DABUND Factory

We produce insulated copper pipe, mini split line set, aluminum pipe, and HVAC parts for global HVAC customers.

SGS Certificate

DABUND mini split line set insulation can be made of polypropylene or black rubber with UV resistance and can meet ASTM E84, UL94, ASTM D1056, and ASTM G21 standards according to product specification.

Exhibition

DABUND joins HVAC exhibitions worldwide to help customers evaluate mini split line sets, insulated copper tubes, and HVAC parts face to face.

FAQ

What is a 3/4" x 1/2" x 50 ft insulated copper tube used for?

It is used as an HVAC copper line set for connecting air conditioning, heat pump, and refrigeration units. The 50 ft length is suitable for longer installation routes in commercial and large residential HVAC systems.

What HVAC system size is suitable for a 3/4" x 1/2" copper line set?

This copper line set size is commonly used for larger HVAC systems, including some 4–6 ton and 48,000–72,000 BTU applications. The final size should always follow the air conditioner or refrigeration equipment manufacturer’s installation requirements.

Why is insulated copper tubing important for HVAC systems?

Insulated copper tubing helps reduce thermal energy loss, prevent condensation, maintain refrigerant temperature stability, protect copper pipes from environmental damage, and improve long-term system efficiency.

What insulation material is used for this copper line set?

DABUND can supply PE insulation or black rubber insulation. Both options provide thermal insulation, moisture protection, UV resistance, and condensation control for HVAC applications.

Is this insulated copper tube suitable for commercial HVAC applications?

Yes. The 3/4" x 1/2" x 50 ft insulated copper tube is suitable for commercial HVAC, large residential air conditioning, heat pump, and refrigeration systems when the system design requires this line set size.

What standards can this HVAC copper line set meet?

The copper tube and insulation can meet standards such as ASTM B280, C12200, UL94, ASTM E84, ASTM D1056, and ASTM G21 according to product material, size, and specification.

Can DABUND customize the insulated copper tube?

Yes. DABUND supports OEM and ODM customization, including copper pipe size, line set length, insulation thickness, insulation material, logo printing, private label packaging, and bulk order manufacturing.

What are your payment terms?

Payment terms can include TT, L/C at sight, credit card, and other agreed payment methods depending on order details and customer requirements.

What are your delivery terms?

Delivery terms can include EXW, FOB, CFR, CIF, and other international trade terms according to the buyer’s logistics requirements.

Are you a trading company or manufacturer?

DABUND is a manufacturer of insulated copper pipe, mini split line sets, aluminum pipe, and HVAC parts.

Can I get a sample before bulk order?

Yes. DABUND can send 3 pieces of free samples. The buyer only needs to cover the express cost.

How long is your delivery time?

Normal delivery time is usually 15–20 days. For urgent orders, DABUND can arrange production and delivery in advance when capacity allows.