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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Dehydrated Copper Tubing

Dehydrated Copper Tubing

-- Steady & Reliable Manufacturer --

Critical Preparation for High-Performance HVACR

Dehydrated copper tubing is the industry standard for refrigeration and air conditioning systems where the presence of even a single drop of moisture can lead to catastrophic system failure. Moisture inside a refrigeration circuit can react with the refrigerant and oil to form hydrofluoric or hydrochloric acids, which corrode the compressor and clog expansion valves. At Zhejiang Jingliang, our dehydration process is a specialized industrial treatment that removes all traces of water vapor and manufacturing oils from the internal bore of the tube. After the drawing and cleaning phases, the tubes are passed through a high-temperature vacuum furnace or purged with ultra-dry nitrogen. This process ensures that the internal dew point is lowered to a level that exceeds ASTM B280 and EN 12735-1 standards. Once dehydrated, the tubes are immediately capped with airtight seals to maintain this "bone-dry" state until the moment of installation.

The value of dehydrated tubing lies in its "System-Ready" quality. For installers and OEMs, using pre-dehydrated copper significantly reduces the time required for "evacuation" or "pulling a vacuum" during the system commissioning phase. It ensures that the refrigeration cycle starts with a chemically stable environment, protecting the longevity of the compressor and the efficiency of the heat exchange process. At Jingliang, we use high-purity C12200 phosphorus-deoxidized copper, which provides the best surface for the dehydration process. Our quality control team performs "Moisture Content Analysis" on every batch, ensuring that the internal residue and moisture levels are significantly below the limits set by global regulatory bodies. Whether you are installing a residential split system or a massive commercial VRF network, our dehydrated tubing provides the essential internal purity required for modern high-pressure refrigerants.

Dehydration & Purity Technical Specs

PropertyDehydrated Tubing Specification
Internal Cleanliness< 0.015 g/m² (Exceeds ASTM B280)
Dew Point Control≤ -40°C (-40°F) internal atmosphere
Material GradeC12200 (Cu-DHP)
End ProtectionHigh-density Polyethylene (HDPE) Airtight Caps
Moisture Content< 0.005 g/m² internal surface
TemperSoft (O60), Light Annealed (O50), or Hard (H58)
Burst PressureTested per ASME B31.5
ComplianceASTM B280, EN 12735-1, JIS H3300
Internal FinishBright Annealed / Scale-Free

Applications in Precision Refrigeration

Dehydrated copper tubing is primarily used for Refrigeration and Air Conditioning Line Sets, connecting the indoor and outdoor units. It is the mandatory choice for VRF (Variable Refrigerant Flow) and VRV systems, which rely on ultra-clean internal environments for their complex electronic expansion valves. In the Commercial Food Industry, these tubes are used for walk-in freezers, display cases, and ice machines. They are also vital for Ultra-Low Temperature (ULT) Freezers used in medical labs and vaccine storage. Beyond HVACR, dehydrated tubing is used for Industrial Gas Manifolds and laboratory grade air lines where moisture-free gas delivery is required. The automotive sector uses these tubes for vehicle AC systems to ensure the long-term reliability of the compact compressors. Additionally, they are used in high-precision Heat Pipes for electronics cooling, where the internal vacuum must be maintained without any vapor interference.

Advantages of Factory-Dehydrated Solutions

The primary advantage is "Compressor Protection"—by eliminating moisture at the source, you prevent the formation of sludge and acid that are the leading causes of compressor burnout. "Installation Speed" is another major benefit; technicians can achieve a deep vacuum faster when starting with pre-dehydrated pipes, saving hours of labor on large-scale projects. Our dehydrated tubing offers "Enhanced System Efficiency" by ensuring that the refrigerant remains pure and the heat transfer surfaces are free from oil films. The "Airtight Capping" provides a visual and physical guarantee of quality, protecting the pipe from atmospheric moisture and dust during transport and storage. Furthermore, our "High Purity" copper ensures that the tube is easy to braze, creating leak-proof joints that are as durable as the pipe itself. Finally, the "Long-Term Reliability" provided by a dry system translates to fewer warranty claims for OEMs and lower maintenance costs for property owners.

Airtight Packaging and Global Logistics

Maintaining dehydration during shipping is our top priority. Every coil or straight length is fitted with press-fit or heat-shrink caps. We then vacuum-seal the products in heavy-duty plastic sleeves to provide a secondary moisture barrier. Payment is typically T/T or L/C. We ship globally from Ningbo, utilizing climate-controlled containers where necessary to prevent condensation during sea transit. For wholesale distributors, we provide "Retail-Ready" packaging that keeps the caps secure even during frequent handling. Every shipment is accompanied by a Certificate of Dehydration and a Mill Test Report, verifying that the internal surface meets the strict requirements of the refrigeration industry. We maintain large stocks of standard dehydrated sizes (1/4" to 1-1/8") to ensure rapid response to the seasonal demands of the HVAC market.

  • Q: Why are the ends of the tube capped?
  • A: The caps keep the internal dehydration intact. If a cap is missing, the tube can absorb moisture from the air in minutes, requiring a much longer vacuum process during installation.
  • Q: Does dehydration affect the bending of the tube?
  • A: Not at all. Dehydration is a cleaning and atmospheric process; the mechanical properties (temper and ductility) of the copper remain perfect for flaring and bending.
ABOUT US
30+YEARS OF
EXPERIENCE
About Us

A Reliable Partner of the Copper Tube Industry

Zhejiang Jingliang Copper-Tube Products Co., Ltd is China Dehydrated Copper Tubing and Dehydrated Copper Tubing Factory, which established in 1994, has been deeply involved in the copper tube industry for over three decades. The company primarily produce various specifications of products such as copper tubes, brass tubes, copper square tubes, fin copper tubes, copper capillary tubes, condenser copper tubes, copper evaporator tubes, and conductive rods, which are of quality and have earned the trust and acclaim of customers both domestically and internationally.

Wide Applications:

These products are widely used in various fields including air conditioning, refrigeration, heat exchange, sanitary ware, automotive, machinery, electric furnaces, and chemical industries.

Convenient Transportation:

Strategically located in Tangpu Town, renowned as the “home of copper tubes” in East China. Our company enjoys a prime location, adjacent to the Shangsan Expressway and National Highway 104, and is conveniently situated just over 70 kilometers from Hangzhou and Ningbo, ensuring easy accessibility and a business position.

Strong Financial Resources:

With its strong financial resources and advanced copper tube processing technology, our company holds an advantageous position in market share, brand value, technological content, and product quality, becoming a preferred supplier for many listed groups.

Large Scale Production:

The company occupies an area of over 20,000 square meters, with a construction area of 12,800 square meters. In 2022, our annual production exceeded 7,500 tons, with a value output of up to 450 million yuan, demonstrating our strong production capacity and market competitiveness.

Comprehensive Industry Chain:

Jingliang has now developed into a complete industrial chain integrating smelting, extrusion, drawing, precision rolling, and annealing. It has been awarded multiple honors, including "Top Ten Copper Tube Enterprises" and "Leading Taxpayer in the Copper Tube Industry".

Smart Manufacturing:

Jingliang Copper-Tube Products will better integrate the concept of factory construction into its corporate development strategy, insist on refining technology and polishing products more finely, and the future of "intelligent manufacturing".

Genuine Cooperation:

Zhejiang Jingliang Copper-Tube Products Co.,Ltd warmly welcomes friends from all walks of life to visit and offer guidance. We look forward to joining hands with you to create a brilliant future together.

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