50 ft 3/8″ x 7/8″ Insulated Copper Tubing for HVAC & Air Conditioning Applications

50 ft 3/8" x 7/8" Insulated Copper Tubing for HVAC

The 50 ft 3/8" x 7/8" insulated copper tubing is a pre-insulated HVAC refrigerant line set designed for air conditioning, ductless mini split systems, heat pumps, centralized air conditioning units and refrigeration applications.

This line set includes 3/8" and 7/8" seamless copper tubing with factory-applied white PE insulation. It helps maintain refrigerant temperature, reduce condensation, protect copper lines and support reliable HVAC system performance.

Dabund Pipe has produced insulated copper tubing, mini split line sets, aluminum pipe and HVAC parts since 2008, supporting HVAC contractors, wholesalers, distributors and private-label customers.

Product Overview: 50 ft 3/8" x 7/8" Pre-Insulated Copper Tube

This 50 ft 3/8" x 7/8" pre-insulated copper tube provides a ready-to-install refrigerant line solution for HVACR applications. It is suitable for larger split air conditioning systems, ductless mini split units, heat pumps and commercial HVAC installations.

The factory-applied white PE insulation improves thermal efficiency, reduces moisture condensation and protects the copper tubing from UV exposure, installation wear and environmental damage.

Key Features of 50 ft 3/8" x 7/8" Insulated Copper Tubing

• 50 ft pre-insulated copper tubing for HVAC and air conditioning applications.

• 3/8" x 7/8" outer diameter copper tube pairing.

• Metric size: 3/8" = 9.52 mm, 7/8" = 22.22 mm.

• 99.9% pure copper pipe meets ASTM B280 and C12200 standards.

• 1/2" white PE insulation helps reduce heat transfer and condensation.

• Insulation meets ASTM E84, UL94, ASTM D1056 and ASTM G21 options.

• Working temperature range from -40℃ to 120℃.

• Pressure rating options from 2100 PSI to 7000 PSI.

• Suitable for ductless mini split, heat pump and centralized air ducted units.

• OEM printing is available for company name, pipe size, meters and private-label branding.

Specifications and Quality Standards

Premium Copper Tube for HVAC Refrigerant Lines

99.9% Pure Copper Construction

The copper tube is made from 99.9% pure copper and supports ASTM B280 and C12200 DHP requirements. High-purity copper provides excellent thermal conductivity, corrosion resistance and stable refrigerant flow.

3/8" x 7/8" HVAC Line Size

The 3/8" x 7/8" line size is commonly used for larger ductless mini split and split AC systems that require higher refrigerant flow capacity. Final line size should always follow the HVAC equipment manufacturer’s installation manual.

High Pressure Capacity for Modern Refrigerants

Pressure rating options from 2100 PSI to 7000 PSI support modern HVAC refrigerant applications, including R410A and R32 systems when installed according to system requirements and local HVAC codes.

Factory-Applied White PE Insulation

The white PE insulation is designed to protect copper refrigerant tubing from heat gain, heat loss, moisture condensation and outdoor exposure. It helps improve installation consistency compared with field-wrapped insulation.

• High-density closed-cell polyethylene foam structure.

• Helps prevent surface condensation and pipe sweating.

• UV-resistant outer layer for indoor and outdoor HVAC line runs.

• Superior tear resistance for installation protection.

• Flame-resistant options including ASTM E84 25/50 performance.

• Suitable for hot, humid, cold and coastal HVAC markets.

99.9% Pure Copper

White PE Insulated Pipe

Plastic Cap Protection

Three-Layer Insulated Copper Line Set Structure

The insulated copper tubing uses a three-layer insulation structure to improve durability, thermal performance and moisture protection in HVAC installations.

Outer Layer: UV-Resistant PE Film

The outer layer uses anti-aging, UV-resistant PE film with an embossed wear-resistant surface. It helps protect the insulation from sunlight, weather exposure and installation abrasion.

Middle Layer: IXPE Foam

The middle layer uses dense-cell IXPE foam for heat and cold resistance, impact absorption, water resistance and thermal insulation performance.

Inner Layer: Closed-Cell Moisture Barrier

The inner closed-cell structure improves air tightness and moisture resistance while helping maintain insulation performance across the -40℃ to 120℃ temperature range.

Thermal Insulation Pipe Production

Insulation Pipe Warehouse

Inner Layer Insulated Pipe

HVACR Applications for 3/8" x 7/8" Insulated Copper Tubing

This 50 ft 3/8" x 7/8" insulated copper tubing is suitable for HVACR projects that require reliable refrigerant transport and durable pre-insulated copper lines.

• Ductless mini split air conditioners.

• Heat pump systems.

• Centralized air ducted units.

• Commercial split AC systems.

• Refrigeration equipment.

• Replacement and retrofit refrigerant line set projects.

50 ft 3/8" x 7/8" Insulated Copper Tubing for HVACR Wholesalers

Dabund Pipe in-house tested insulated copper tubing is designed to make HVAC installation simple and quick. Factory insulation, accurate copper sizing and bulk production support help HVACR wholesalers and contractors save time and reduce jobsite risk.

Dabund can support OEM marking, custom insulation thickness, custom packaging and bulk supply for distributors, importers and private-label HVAC brands.

Insulated Copper Tubing Size Options

Recommended Applications by AC Capacity

The 3/8" x 7/8" insulated copper pipe is commonly used for 6.0 ton to 8.0 ton ductless mini split systems and many 72,000 BTU to 96,000 BTU applications. Final sizing should always follow the HVAC equipment manufacturer’s requirements.

Why Choose 50 ft 3/8" x 7/8" Insulated Copper Tubing from Dabund Pipe?

Manufacturer Since 2008

Dabund Pipe is a manufacturer of insulated copper tubing, mini split line sets, aluminum pipe and HVAC parts with long-term production and export experience.

Individual Pre-Insulated Rolls

Individual pre-insulated rolls are designed to fit ductless mini splits, VRF systems, heat pumps and unitary HVAC system installations.

Competitive B2B Supply

Dabund supports HVAC wholesalers, contractors and private-label buyers with quality products, competitive pricing, OEM customization and professional service.

Dabund Factory

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

SGS Certificate

Mini split line set insulation can be made of polypropylene or black rubber with UV resistance, meeting ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.

Exhibition

Dabund joins HVAC exhibitions worldwide to present insulated copper tubing and mini split line set products to customers face to face.

FAQ

What is 50 ft 3/8" x 7/8" insulated copper tubing used for?

It is used as a pre-insulated HVAC refrigerant line set for ductless mini split systems, heat pumps, centralized air conditioning units and refrigeration applications.

What does 3/8" x 7/8" mean?

It refers to the outer diameters of the two copper refrigerant lines. The metric sizes are approximately 9.52 mm and 22.22 mm.

What AC capacity is 3/8" x 7/8" commonly used for?

The 3/8" x 7/8" line set is commonly used for 6.0 ton to 8.0 ton ductless mini split systems and many 72,000 BTU to 96,000 BTU applications.

Why is insulation important for HVAC copper tubing?

Insulation helps reduce heat gain, heat loss and condensation. It improves energy efficiency, protects building structures from moisture and extends copper line service life.

Is this insulated copper tubing suitable for outdoor use?

Yes. The UV-resistant insulation is suitable for indoor and outdoor HVAC line runs when installed correctly and protected according to project requirements.

Can this tubing be used with R410A and R32 refrigerants?

Yes. This insulated copper tubing is compatible with common HVAC refrigerants such as R410A and R32 when installed according to equipment specifications and local HVAC code requirements.

Does this insulated copper pipe meet HVAC industry standards?

Yes. The copper tube can meet ASTM B280 and C12200 standards, and insulation options can meet ASTM E84, UL94, ASTM D1056 and ASTM G21 requirements.

Can insulated copper tubing improve energy efficiency?

Yes. Pre-insulated copper tubing reduces unwanted heat transfer in refrigerant lines, helping HVAC systems maintain more stable cooling and heating performance.

Can insulated copper tubing be customized?

Yes. Dabund can customize length, insulation thickness, printing, packaging and branding for OEM and private-label HVAC buyers.

Are you a trading company or manufacturer?

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

Can I get a free sample?

Yes. Dabund can provide qualified customers with 3 pieces of free samples. Express cost may need to be covered by the buyer. You can request samples through the free sample page.

Can I print my logo?

Yes. Dabund accepts OEM and ODM orders, including logo printing, brand marking and customized packaging.

What payment terms are available?

Payment terms may include T/T, L/C at sight, credit card and other agreed payment methods depending on order details.

What delivery terms can you offer?

Dabund can offer common international trade terms such as EXW, FOB, CFR and CIF.

How long is your delivery time?

Normal delivery time is usually 15 to 20 days. For urgent orders, production and shipment can be arranged in advance according to factory schedule.