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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Solar Thermal Copper Pipes

Solar Thermal Copper Pipes

-- Steady & Reliable Manufacturer --

Harnessing Efficiency in Solar Thermal Systems

Solar thermal copper pipes are the critical conduits for converting sunlight into usable heat energy. In the renewable energy sector, copper is the undisputed material of choice due to its world-class thermal conductivity, which is nearly eight times higher than that of aluminum and twenty times higher than stainless steel. This physical property allows solar collectors to capture energy even during low-light conditions, ensuring maximum system efficiency. Our solar-grade copper pipes are manufactured using high-purity C12200 phosphorus-deoxidized copper, which provides the perfect balance of heat transfer capability and resistance to the high-temperature stagnation cycles common in solar vacuum tubes and flat-plate collectors. As the global transition toward "Green Building" accelerates, these pipes provide the reliable, long-lasting performance required for domestic hot water, space heating, and industrial process heat applications.

Beyond simple heat transfer, solar thermal pipes must withstand extreme environmental stressors. Our pipes are designed to handle constant thermal expansion and contraction without suffering from fatigue or cracking. This is particularly important for systems using glycol-based heat transfer fluids, which can be chemically aggressive at high temperatures. We utilize a bright annealing process to ensure the internal surface is free from any carbon films or residues that could impede fluid flow or cause internal corrosion. Furthermore, our pipes are compatible with advanced selective coatings, such as black chrome or blue sputtered films, used in high-efficiency solar absorbers. By choosing Zhejiang Jingliang's solar copper solutions, manufacturers and installers benefit from a product that has been optimized for the specialized needs of the solar industry—offering unmatched durability, high burst pressure ratings, and ease of brazing that ensures 20 to 30 years of maintenance-free service.

Technical Parameters & Solar Performance

FeatureTechnical Specification
Material GradeC12200 (Cu-DHP), Min 99.9% Pure
Thermal Conductivity340 W/(m·K) at 20°C
Standard ComplianceEN 1057, ASTM B88, ISO 9001
Melting Point1083°C (Stagnation Heat Resistant)
Outer Diameter (OD)8mm to 28mm (Typical Solar Sizes)
Wall Thickness0.5mm to 1.2mm
Tensile Strength245 - 290 MPa (Half-Hard)
Hydrostatic TestTested to 50 Bar (Safety Factor 4:1)
Surface ConditionDegreased and Bright Annealed

Applications in Renewable Energy

The primary application for these pipes is in the manufacturing of Flat Plate Solar Collectors, where they serve as the absorber risers and headers. They are also essential in Vacuum Tube Collectors (Heat Pipes), where they transfer heat from the glass tube to the manifold. In the residential sector, they are the standard for pumped and thermosiphon solar water heaters, transporting heated fluid from the rooftop to the storage tank. In the commercial sector, large arrays of solar thermal pipes are used for district heating systems, commercial laundries, and swimming pool heating. They are also finding increasing use in industrial solar process heating (SHIP), where solar energy is used to pre-heat water for boilers in the food and textile industries. Their natural resistance to UV radiation and thermal degradation makes them the only reliable choice for long-term outdoor exposure in diverse climates, from desert heat to freezing mountain environments.

Advantages of Copper in Solar Technology

The most significant advantage is energy efficiency; the superior thermal conductivity of our copper means a smaller collector area can achieve the same energy output as a larger collector made of inferior materials. Copper is also inherently resistant to the "stagnation" temperatures (up to 200°C) that occur when a solar system is not circulating fluid; unlike plastics, copper will not melt, warp, or off-gas toxic chemicals. Its natural antimicrobial properties also prevent the growth of biofilms in domestic water lines. From an installation standpoint, our solar pipes are easy to join using standard brazing or compression fittings, reducing labor costs. Furthermore, copper is 100% recyclable, which enhances the "green" credentials of the solar project and contributes to LEED or BREEAM certification points. Finally, the long lifespan of copper—often exceeding the building itself—ensures that the return on investment (ROI) for solar thermal systems is maximized for the end-user.

Global Logistics and Payment

We supply solar thermal pipes in straight lengths for collector manufacturing or in large LWC coils for flexible installation. For payment, we accept T/T (30% deposit) and L/C at sight, with specialized pricing for long-term renewable energy project tenders. We package our solar pipes in UV-protected shrink wrap and reinforced wooden crates to ensure they arrive at your factory or job site in pristine condition. Our proximity to major shipping hubs in Ningbo and Shanghai allows for cost-effective global delivery. We provide full technical documentation, including Mill Test Certificates and RoHS compliance certificates, ensuring that your solar products meet international environmental and safety regulations. For large-scale solar farm projects, we can coordinate scheduled deliveries to match your construction timeline, reducing your on-site storage requirements.

  • Q: Why use C12200 for solar instead of standard plumbing copper?
  • A: C12200 is phosphorus-deoxidized, which makes it resistant to hydrogen embrittlement during the high-temperature brazing used to attach absorber fins, ensuring a stronger, more durable bond.
  • Q: Are these pipes compatible with propylene glycol?
  • A: Yes, our copper is chemically stable with all common heat transfer fluids used in solar thermal circuits.
  • Q: Can you provide internal grooving for solar pipes?
  • A: Yes, we can produce inner-grooved tubes for high-efficiency solar heat exchangers to further enhance the heat transfer coefficient.
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 Thermal Copper Pipes and Solar Thermal Copper Pipes 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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