1. Our 1.1/4"-3/8" air conditioning connexion copper insulated tube is meticulously designed with an outer dimension expressed in both inches and metric units: 6.35mm - 9.52mm.
2. Crafted from 99.9% pure copper, our tubes are compliant with stringent ASTM B280 and C12200 standards, ensuring unmatched quality and reliability.
3. Available in a wide range of sizes to meet your needs, our AC Copper Sizes include 1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1 1/8", with lengths ranging from 15m to 50m, providing versatile options for all installations.
4. The insulation is engineered from 1/2" Polypropylene, which is UV Resistant and conforms to ASTM E 84, UL94, ASTM D1056, and ASTM G 21 standards. It is designed to operate in extreme temperatures, from -40ºC to 120ºC.
5. Our insulated copper tubes are perfect for every Air Conditioning & Refrigeration application, including Ductless mini-splits, heat pumps, and Centralized Air Ducted Units.
6.
Pressure Rating: Our tubes have an impressive pressure rating of 2100 to 7000 PSI, significantly exceeding the required 700 PSI for R410, ensuring superior performance and safety.
7. We produce the insulation in-house and offer customization by printing your company name, size, meters, etc., directly on the insulation.
Size List
Size |
Copper Pipe |
Thickness Insulation Size |
Length Available |
Flame Resistant |
1/4+3/8 |
6.35x0.75+9.52x0.8mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
1/4+1/2 |
6.35x0.75+12.7x0.8mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
1/4+5/8 |
6.35x0.75+15.88x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
3/8+5/8 |
9.52x0.8+15.88x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
3/8+3/4 |
9.52x0.8+19.05x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
1/2+3/4 |
12.7x0.8+19.05x0.9mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
3/8+7/8 |
9.52x0.8+22.22x1.14mm |
3/8"/1/2"/3/4"/1" |
1ft - 164ft |
M1/B1 |
Our 1ft-50ft Copper Line Sets are available with both ends of the copper pipes capable of flaring and featuring nuts for easy installation.





Changzhou DABUND Pipe Co., Ltd. is a distinguished manufacturer of HVAC parts, specializing in air conditioner installation pipe kits. This includes insulated copper pipes and comprehensive air conditioner installation kits. We also produce white embossed PE insulation and aluminum pipes in-house, passing the cost savings to our customers. With a forward-thinking approach, we have expanded our air conditioner connecting pipe to numerous overseas markets. We are committed to being your ONE-STOP source for HVAC & R parts, including Air Conditioner Brackets, Air Conditioner Ducts, Rubber Insulation, Air Conditioner Drain Hoses, Air Conditioner Pumps, and Bases for external air conditioning units. Our products are exported to a multitude of countries, such as the USA, Canada, and Germany. Adhering to our management concept of "Growing with clients," we strive to build lasting partnerships.
At Changzhou DABUND Pipe Co., Ltd., quality is our top priority. We believe the true measure of an enterprise's vitality is the market's response. We warmly welcome customers and friends from around the world to collaborate with us and eagerly anticipate your inquiries. Discover the excellence of DABUND and enhance your life.
1. Q: What are your payment terms for the Refrigerant Air Conditioning Connexion Copper Insulated Tube?
A: We accept TT, L/C AT SIGHT, CREDIT CARD, and more.
2.
Q: Can I get a sample?
A: Absolutely! We can send you a free sample. You only need to cover the express shipping costs.
3.
Q: What are the sample and production times?
A: * Existing samples: 2 days
* Customized samples: 5-7 days
* Production time: 15-20 days
4.
Q: Can I have my logo printed on the product?
A: Certainly, we welcome OEM and ODM orders.
5.
Q: What is your typical delivery time?
A: Typically, our delivery time is 15-20 days. If you have urgent requirements, please inform us in advance.
6.
Q: What products can we purchase from your company?
A: We offer air conditioner installation pipes, air conditioner copper line sets, air conditioner line set covers, and other HVAC parts.
7.
Q: Are you a trading company or a manufacturer?
A: We are a manufacturer.