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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Solar Copper Tube

Solar Copper Tube

-- Steady & Reliable Manufacturer --

Harnessing Renewable Energy with High-Conductivity Copper

Solar Copper Tube is the critical heat-transfer element in solar thermal collectors, designed to convert sunlight into domestic hot water or space heating. At Zhejiang Jingliang, we recognize that the efficiency of a solar water heater depends entirely on the "Thermal Responsiveness" of the copper. Copper has the highest thermal conductivity of any commercial metal, making it the perfect material for solar "absorber plates" and "riser tubes." Our solar tubes are manufactured to be ultra-thin yet structurally sound, allowing for rapid heat absorption from the sun while withstanding the constant thermal expansion and contraction cycles that occur as the sun rises and sets. We utilize specialized alloys like C12200 to ensure the tubes remain corrosion-resistant when filled with glycol-based heat transfer fluids or treated water.

Our solar tubing often undergoes a "Selective Coating" process (or is supplied ready for such processes), where the surface is treated to maximize solar absorption while minimizing infrared emission. We provide these tubes in both "Soft Annealed" coils—ideal for serpentine heat exchangers—and "Hard Drawn" straight lengths for the main header pipes of solar arrays. A key challenge in solar applications is "Stagnation Temperature," where the tubes can reach over 200°C if the pump fails on a sunny day. Our solar-grade copper is tested to maintain its structural integrity at these extreme temperatures without softening or failing. By choosing Jingliang Solar Copper, manufacturers can build collectors that offer higher efficiency ratings, leading to faster payback periods for homeowners and a smaller carbon footprint for the planet.

Thermal Transfer & Endurance Specs

PropertySolar Tube Data
Thermal Conductivity~391 W/(m·K)
Surface FinishStandard or Oxidized for Absorption
OD Range8mm - 22mm (Common Riser Sizes)
Wall Thickness0.5mm - 1.0mm (Thin-wall optimization)
Stagnation Temp LimitUp to 250°C (Material stability)
Corrosion ResistanceHigh (Resistance to Glycol/Water)
TemperSoft (O60) or Half-Hard (H55)
Bending Radius3x OD (Excellent for serpentine)
Expansion Coeff.17.7 x 10⁻⁶ / °C

Solar Thermal Panels and Geothermal Loops

Solar copper tubes are the primary component in "Flat Plate Collectors," acting as the risers and headers that transport heat to the storage tank. They are also used in "Evacuated Tube Collectors" as the heat pipe element that transfers energy to the manifold. In "Solar Pool Heating" systems, these tubes provide a durable, chemical-resistant path for pool water. Beyond solar, they are increasingly used in "Geothermal Heat Pump" loops, where their durability and high heat transfer rate are utilized for ground-source energy extraction. They are also used in "Heat Recovery Units" for graywater, capturing heat from drain water to pre-heat incoming fresh water. In large-scale "Solar Concentrators," specialized heavy-wall solar copper is used to manage the intense heat at the focal point of the array.

Maximum Efficiency and Thermal Durability

The "High Thermal Conductivity" of our solar copper is its greatest advantage, ensuring that the maximum amount of energy is harvested from every hour of sunlight. "Extreme Temperature Resilience" allows the system to survive stagnation events that would destroy plastic or aluminum pipes. Our tubes offer "Superior Solderability and Ultrasonic Welding" performance, essential for creating the high-surface-area bond between the tube and the absorber fin. The "Long Life Expectancy" (30+ years) of copper ensures that the solar system will last as long as the building it serves. Copper is also "UV-Proof," meaning it will not degrade under the intense radiation found on rooftops. Furthermore, the use of "Recyclable Materials" aligns with the renewable energy mission of solar projects, ensuring that the system itself is environmentally responsible from production to disposal.

Global Logistics for Green Tech

Solar tubes are often shipped in bulk quantities to collector manufacturers. We use "VCI (Vapor Corrosion Inhibitor)" packaging to ensure the tubes arrive bright and free of oxidation, which is critical for the subsequent coating or welding processes. Payment is 30% T/T and 70% L/C. We ship from the Port of Ningbo, offering "Eco-Friendly" packaging options like reusable steel cradles. Our logistics team works closely with solar manufacturers to provide "Just-In-Time" delivery of specific lengths, reducing the need for on-site cutting and scrap management.

  • Q: Why use copper instead of aluminum for solar?
  • A: Copper has much higher thermal conductivity and far better corrosion resistance to the thermal fluids used in solar systems, leading to a longer system life and higher efficiency.
  • Q: Are these pipes suitable for pressurized solar systems?
  • A: Yes, our solar tubes are tested to handle the high pressures (up to 6-10 bar) common in modern pressurized solar thermal circuits.
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 Solar Copper Tube and Solar Copper Tube 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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