1. Our 1.1/4"-3/8" Air-Conditioning Connecting Pipe delivers precision with outer dimensions of 6.35mm - 9.52mm, catering to both inch and metric systems.
2. Crafted from 99.9% pure copper, our pipe adheres strictly to ASTM B280 and C12200 standards, ensuring unparalleled quality and reliability.
3. Available AC Copper Sizes include: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", and 1 1/8". Length options range from 15m to 50m, tailored to suit a variety of installation needs.
4. Our insulation, made from 1/2" Polypropylene with UV resistance, meets stringent standards (ASTM E 84, UL94, ASTM D1056, ASTM G 21) and operates efficiently in temperatures from -40ºC to 120ºC.
5. Ideal for all Air Conditioning & Refrigeration applications, including ductless mini-splits, heat pumps, and centralized air ducted units.
6.
Pressure Rating: Our pipes are tested to withstand pressures from 2100 to 7000 PSI, far exceeding the required 700 PSI for R410.
7. We manufacture our insulation in-house, offering customization with your company name, size, meters, etc., printed directly on the product.
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 |
Available in lengths ranging from 1ft to 50ft, our Copper Line Sets can be customized with flaring and nuts on both ends.





Changzhou DABUND Pipe Co., Ltd., a professional HVAC parts manufacturer, specializes in air conditioner installation pipe kits. Our range includes insulated copper pipes and comprehensive installation kits. To optimize cost-efficiency, we produce white embossed PE insulation and aluminum pipes in-house. Our scientifically progressive approach has expanded our market reach globally. We aim to be your ONE-STOP source for HVAC & R parts, offering products like Air Conditioner Brackets, Ducts, Rubber Insulation, Drain Hoses, pumps, and bases for external units. Exporting to countries including the USA, Canada, and Germany, we uphold 'Growing with clients' as our core management concept.
Quality is our top priority. At Changzhou DABUND Pipe Co., Ltd., we believe that the market is the ultimate test of our enterprise's vitality. We warmly welcome customers and friends worldwide to collaborate with us. We eagerly anticipate your inquiries and look forward to a prosperous partnership. Choose DABUND, Choose Excellence.
1. Q: What are your payment terms for the Air-Conditioning Connecting Pipe?
A: We offer a variety of payment options including TT, L/C at sight, and credit card.
2.
Q: Can I get a sample?
A: Absolutely, we provide free samples. You only need to cover the express shipping costs.
3.
Q: What is the lead time for samples and production?
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: Yes, definitely! We support both OEM and ODM services.
5.
Q: What is your standard delivery time?
A: Typically, our delivery time is 15-20 days. For urgent orders, please inform us in advance.
6.
Q: What products do you offer?
A: We specialize in air conditioner installation pipes, copper line sets, line set covers, and other HVAC parts.
7.
Q: Are you a trading company or a manufacturer?
A: We are a manufacturer.