1. Our insulated HVAC parts connecting pipes for ductless mini-split systems feature dimensions of 1 1/4"-3/8" in inches and 6.35mm - 9.52mm in metric measurements.
2. Crafted from 99.9% pure copper, our pipes comply with ASTM B280 and C12200 standards, ensuring top-notch quality and reliability.
3. We offer a wide range of AC copper sizes: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", and 1 1/8", with lengths available in 15m, 20m, 25m, 30m, and 50m to cater to diverse needs.
4. Our insulation, made from 1/2" UV-resistant polypropylene, meets ASTM E 84, UL94, ASTM D1056, and ASTM G 21 standards. It operates effectively in temperatures ranging from -40ºC to 120ºC.
5. Designed for versatility, our products are perfect for all air conditioning and refrigeration applications, including ductless mini-split systems, heat pumps, and centralized air duct units.
6.
6. Our pipes boast a pressure rating of 2100 to 7000 PSI, far exceeding the required 700 PSI for R410 refrigerants.
7. We manufacture our own insulation, allowing us to customize it with your company name, sizes, and meters.
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 |
We offer copper line sets ranging from 1ft to 50ft, with both ends capable of flaring and featuring nuts for secure connections.





Changzhou DABUND Pipe Co., Ltd. is a distinguished manufacturer specializing in HVAC parts and air conditioner installation pipe kits, including insulated copper pipes. We also produce white embossed PE insulation and aluminum pipes in-house to reduce costs for our customers. Utilizing a progressive scientific approach, we rapidly introduce our air conditioner connecting pipes to numerous international markets. We aspire to be your ONE-STOP source for all HVAC & R parts, such as air conditioner brackets, ducts, rubber insulation, drain hoses, pumps, and external unit bases. Our products are exported to many countries, including the USA, Canada, and Germany. Our management philosophy, 'Growing with clients,' reflects our commitment to mutual development.
Quality is our top priority, and we believe that market performance is the ultimate testament to a company's vitality. We warmly welcome customers and friends from around the globe to collaborate with us and look forward to your inquiries soon. At DABUND, we believe in 'Enjoy DABUND, Enjoy Life.'
1. Q: What are your payment terms for the insulated connecting pipes for ductless mini split systems?
A: We accept various payment methods including TT, L/C at sight, and credit card.
2.
Q: Can I receive a sample?
A: Absolutely! We can provide you with a free sample; you only need to cover the express shipping costs.
3.
Q: What are the lead times for samples and full production?
A: * Existing sample: 2 days;
* Customized sample: 5-7 days;
* Full production: 15-20 days.
4.
Q: Can we print our logo on the product?
A: Yes, of course. We accept both OEM and ODM orders.
5.
Q: How long is the typical delivery time?
A: Our standard delivery time is 15-20 days. If you need it urgently, please inform us beforehand.
6.
Q: What products can we purchase from you?
A: We offer 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.