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DBJ-003
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DABUND
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Copper
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1M - 50M
Material
Color
Keywords
Application
3/8" x 5/8" x 100 Ft Pre-Insulated Copper Tube
The Dabund 3/8" x 5/8" x 100 ft pre-insulated copper tube is a continuous 30.48 m pair of refrigeration-grade copper tubing for compatible mini split, heat-pump, VRF, multi-split, and split HVAC systems. It combines a 3/8" liquid line and a 5/8" suction line with factory-applied black closed-cell elastomeric insulation for project installation, contractor inventory, wholesale distribution, and OEM supply.
The long-roll format allows qualified HVAC technicians to measure and cut the tubing according to the approved route. Standard 100 ft coils are normally supplied with plain copper ends protected by plastic caps rather than pre-flared connections, making them suitable for field flaring, brazing, or other connection methods specified by the equipment manufacturer.
Compatibility notice: A 100 ft coil does not mean every HVAC system can operate with a 100 ft refrigerant run. Confirm the required pipe diameter, maximum actual and equivalent piping length, vertical separation, copper wall thickness, refrigerant type, additional charge, oil-return requirements, insulation thickness, and permitted connection method for the exact indoor and outdoor units.
Product Specifications
| Product Name | 3/8" x 5/8" x 100 Ft Pre-Insulated Copper Tube |
| Nominal Length | 100 ft / approximately 30.48 m continuous coil |
| Liquid Line Outside Diameter | 3/8" / 9.52 mm |
| Suction Line Outside Diameter | 5/8" / 15.88 mm |
| Copper Material | C12200 DHP copper; ASTM B280 configurations available |
| Copper Purity | 99.9% copper |
| End Configuration | Plain ends with protective plastic caps; field cutting and connection required |
| Standard Insulation | Black closed-cell elastomeric or NBR-based insulation, subject to order specification |
| Insulation Thickness Options | 13 mm, 17 mm, 19 mm, or 25.4 mm; other configurations available by request |
| Insulation Temperature Range | Approximately -40°C to 120°C, subject to the selected insulation grade |
| Applications | Compatible ductless mini split, heat-pump, VRF, multi-split, and split HVAC systems specifying 3/8" x 5/8" refrigerant piping |
| Customization | Tube size, copper wall thickness, length, insulation, printed marking, cap color, coil packaging, carton, logo, and private label |
Key Features of the 100 Ft Pre-Insulated Copper Tube
100 Ft Continuous Coil for Field Cutting
The continuous 100 ft roll gives contractors and project installers flexibility when preparing refrigerant piping for different route lengths. The tubing can be measured and cut into approved sections, helping reduce unnecessary joints and simplify inventory for projects with variable installation distances.
Refrigeration-Grade C12200 Copper
The copper tubing can be manufactured from C12200 deoxidized high-phosphorus copper for air-conditioning and refrigeration service. ASTM B280 configurations are available according to tube diameter, wall thickness, refrigerant, system design pressure, destination standard, and project specification.
Protective Caps for Clean Copper Interiors
Plastic caps help protect the plain tube ends against dust, moisture, and debris during storage, handling, and transport. Keep the tubing sealed until it is ready to be measured, cut, reamed, flared, brazed, or connected on site.
Black Closed-Cell Elastomeric Insulation
The flexible black insulation has a closed-cell structure that helps reduce heat transfer, moisture vapor movement, and surface condensation. Different insulation thicknesses can be selected for indoor installations, humid climates, outdoor routing, cold suction lines, and project-specific thermal or fire-performance requirements.
OEM Printing and Private-Label Packaging
Dabund can print company name, logo, copper size, metric or imperial length, batch number, and other product information on the insulation or packaging. Customized coil wrapping, labels, cartons, barcodes, instructions, and cap colors are available for HVAC distributors, wholesalers, importers, and equipment brands.
99.9% Pure Copper
Black Rubber Insulation
Protective Plastic Caps
Black Elastomeric Pipe Insulation
Black closed-cell elastomeric insulation is designed for refrigerant piping that requires flexible thermal insulation and vapor control. When joints and cut ends are sealed correctly, the insulation helps reduce heat gain, condensation, and moisture movement toward the cold copper surface.
Thermal Performance
The low-conductivity closed-cell structure helps limit unwanted heat transfer through the refrigerant tubing. Insulation thickness should be selected according to suction-line temperature, ambient conditions, relative humidity, indoor or outdoor location, and applicable energy requirements.
Condensation and Vapor Control
Closed-cell insulation helps resist moisture vapor penetration and surface condensation. All butt joints, longitudinal seams, fittings, valves, flare connections, brazed joints, and damaged areas should be sealed with compatible adhesive, insulation tape, or vapor-resistant material.
Flexible Routing
The flexible insulation follows gradual pipe bends and supports neat routing through service shafts, wall penetrations, ceilings, line-set covers, and equipment areas. The copper tube must still be bent within an appropriate radius to avoid flattening, kinking, work hardening, or cracking.
Outdoor Protection
For long-term outdoor exposure, use insulation with the required UV and weather resistance and apply a compatible protective coating, jacket, tape, or line-set cover where specified. Outdoor joints and exposed ends require complete sealing to prevent water entry and insulation deterioration.
100 Ft Copper Tube Product Overview
The 100 ft roll is suitable for contractor workshops, HVAC distribution warehouses, project inventory, multi-zone system installations, commercial retrofits, equipment packages, and jobs where the final field length varies. Exact coil weight, copper wall thickness, insulation grade, insulation thickness, outer diameter, packaging, and test-document requirements should be confirmed before production.
Available Pre-Insulated Copper Tube Sizes
Dabund supplies multiple liquid-line and suction-line combinations for HVAC and refrigeration projects. Long-roll lengths include 15 m, 20 m, 25 m, 30 m, and 50 m, with additional lengths, insulation options, and packaging configurations available by request.
| Copper Tube Pair | Available Long-Roll Lengths | Black Insulation Thickness | Flame-Resistance Options |
|---|---|---|---|
| 1/4" + 3/8" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
| 1/4" + 1/2" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
| 1/4" + 5/8" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
| 3/8" + 5/8" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
| 3/8" + 3/4" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
| 1/2" + 3/4" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
| 3/8" + 7/8" | 15 m / 20 m / 25 m / 30 m / 50 m | 13 / 17 / 19 / 25.4 mm options | M1 / B1 options |
How to Plan a 100 Ft Refrigerant Piping Installation
Long refrigerant piping must be designed around the connected HVAC equipment rather than the available coil length. Complete the following checks before cutting or installing the copper tubing.
| Planning Item | What Must Be Confirmed |
|---|---|
| Pipe Diameter | Confirm that the equipment specifies a 3/8" liquid line and a 5/8" gas or suction line. Do not select the tubing only by BTU capacity. |
| Maximum Actual Length | Verify that the planned one-way piping length is within the equipment manufacturer’s permitted range. |
| Equivalent Length | Include allowances for elbows, fittings, branch joints, reducers, traps, and other components when required. |
| Vertical Separation | Check the maximum permitted height difference when the outdoor unit is above or below the indoor unit. |
| Additional Refrigerant | Determine the factory pre-charge allowance and the exact additional charge per foot or meter beyond that allowance. |
| Oil Return | Follow model-specific requirements for risers, traps, pipe slope, refrigerant velocity, and compressor oil return. |
| Copper Wall Thickness | Match wall thickness and pressure capability to the refrigerant, system design pressure, standard, and local code. |
| Insulation | Select sufficient thickness, vapor resistance, UV protection, and fire performance for the project environment. |
Cut the Coil to the Approved Route Length
Measure the approved piping route and cut only the required length. Do not connect the entire 100 ft roll and leave excess tubing tightly coiled unless the equipment manufacturer explicitly permits that arrangement. Unnecessary length increases pressure drop, refrigerant volume, equivalent length, charging requirements, and installation complexity.
Use Correct Field Connection Procedures
Keep the tube interior clean and dry, cut the copper square, remove burrs without allowing debris to enter, and use the required flare or brazed connection. When brazing is permitted, purge with dry nitrogen to reduce internal oxidation. Complete pressure testing, leak checking, evacuation, vacuum verification, and refrigerant charging according to the equipment manufacturer’s procedures.
How to Confirm 3/8" x 5/8" System Compatibility
A 3/8" x 5/8" tube pair is used by selected mini split, heat-pump, multi-split, VRF, and conventional split systems. However, pipe size is model-specific. Equipment with similar nominal cooling capacity can require different refrigerant-line diameters, reducers, branch components, copper wall thicknesses, maximum lengths, and refrigerant-charge calculations.
Confirm the liquid and suction service-valve connection sizes.
Confirm the approved refrigerant and copper wall thickness.
Check maximum actual, total, and equivalent piping lengths.
Check maximum vertical separation and branch-piping restrictions.
Calculate additional refrigerant using the exact model-specific formula.
Confirm insulation thickness, vapor sealing, and outdoor protection.
Do not use a generic tonnage or BTU chart as the final selection method. The exact indoor-unit and outdoor-unit engineering data takes priority over general line-set guidance.
Quality and Test Documentation
Depending on the selected copper and insulation configuration, documentation may be available for ASTM B280, C12200 copper, ASTM E84, UL 94, ASTM D1056, ASTM G21, flame spread, smoke development, thermal performance, and material properties. Buyers should request the current test report that corresponds to the exact copper tube, wall thickness, insulation material, insulation thickness, color, and production batch being ordered.
Why Source Pre-Insulated Copper Tubes from Dabund?
Dabund has manufactured insulated copper pipe, mini split line sets, aluminum pipe, and HVAC installation accessories since 2008. The company supports HVAC contractors, distributors, wholesalers, importers, equipment brands, and project buyers with standard and customized long-roll copper tubing.
Multiple copper diameters and paired tube configurations
Long rolls from 15 m to 50 m
Black elastomeric and white PE-style insulation options
Customized insulation printing, caps, labels, cartons, and barcodes
OEM and ODM support for distributors and private-label brands
Sample evaluation and bulk export-order support
Dabund Factory and Export Packaging
Production and export packaging for insulated copper tubing, mini split line sets, and HVAC installation accessories.
Certificate and Test Support
Request certificates and test reports that match the copper tube, insulation material, thickness, color, and production batch specified in the purchase order.
International HVAC Exhibitions
Dabund presents insulated copper tubing, mini split line sets, and HVAC accessories to international distributors, contractors, importers, and project buyers.
Wholesale, OEM, and Custom Quotations
For an accurate quotation, provide the required liquid-line and suction-line diameters, copper wall thickness, finished roll length, insulation material and thickness, temperature and fire-performance requirement, printed marking, cap color, coil packaging, destination market, certification requirement, annual demand, and order quantity.
Dabund can prepare standard export packaging, customized labels, private-label cartons, barcodes, instruction sheets, and project-specific product markings. Sample and bulk production schedules depend on the requested specification, quantity, packaging, raw-material availability, and current factory capacity.
Frequently Asked Questions
What is a 3/8" x 5/8" x 100 ft pre-insulated copper tube?
It is a continuous pair of insulated HVAC copper tubes containing a 3/8" liquid line and a 5/8" suction line. The 100 ft coil is intended as bulk field piping for compatible mini split, heat-pump, VRF, multi-split, and split systems.
Can the full 100 ft coil be connected to one HVAC system?
Only when the exact equipment model permits that actual and equivalent piping length, vertical separation, number of bends, pipe diameter, and refrigerant charge. The 100 ft coil is normally cut to the approved project length rather than installed automatically as one complete run.
Are the copper tube ends pre-flared?
Long rolls are normally supplied with plain ends and protective plastic caps. A qualified technician cuts the tubing to length and prepares the required flare or brazed connection according to the equipment manufacturer’s instructions.
Can the 100 ft copper tube be cut into shorter sections?
Yes. The continuous roll can be measured and cut into approved project lengths. Seal the unused tubing immediately after cutting to keep the copper interior clean, dry, and free from contamination.
Does a long refrigerant line require additional refrigerant?
Frequently, yes. Most equipment includes a factory charge for a defined piping allowance. When the installed length exceeds that allowance, the technician must calculate and weigh in the model-specific additional charge. Never use a generic charge rate.
Is 3/8" x 5/8" suitable for every 36,000 or 48,000 BTU system?
No. Some systems in those capacity ranges use 3/8" x 5/8" tubing, while others specify different diameters. Pipe size must be selected from the exact equipment engineering data rather than nominal BTU capacity alone.
What are the benefits of black elastomeric insulation?
Closed-cell elastomeric insulation is flexible and helps reduce heat transfer, moisture vapor movement, and surface condensation. Correct insulation thickness and complete sealing are required for effective performance.
Can the pre-insulated copper tube be installed outdoors?
Outdoor installation is possible when the insulation and protective system are suitable for UV, rain, temperature, moisture, and physical exposure. A compatible coating, jacket, tape, or line-set cover may be required for long-term protection.
Is the copper tubing suitable for R410A or R32 systems?
Suitability depends on the exact copper wall thickness, tube specification, pressure requirements, equipment design, refrigerant, and destination code. Confirm the required ASTM B280 configuration and working-pressure documentation before ordering.
Can Dabund print my brand and product information?
Yes. OEM and ODM options can include company name, logo, tube size, length, batch details, insulation printing, barcodes, labels, cartons, instruction sheets, and customized cap colors.
Can I request a sample before placing a wholesale order?
Qualified buyers can request samples to evaluate copper dimensions, wall thickness, insulation, printing, cap design, and packaging. Sample availability, quantity, and freight terms should be confirmed with the sales team.
What are the typical payment, delivery, and lead-time terms?
Payment methods may include T/T, letter of credit at sight, and other agreed options. Trade terms may include EXW, FOB, CFR, or CIF. Production time depends on the specification, quantity, packaging, material availability, and confirmed factory schedule.
