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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Brazed Copper Tube Assemblies

Brazed Copper Tube Assemblies

-- Steady & Reliable Manufacturer --

Precision Integrated Solutions for HVACR and Industrial OEMs

Brazed copper tube assemblies represent a value-added service that transforms raw tubing into a complete, ready-to-install sub-component. Instead of receiving loose pipes and fittings, our clients receive pre-assembled, leak-tested manifolds, distributor headers, and complex branch circuits. At Zhejiang Jingliang, we combine our high-purity copper tubing with advanced robotic and manual brazing techniques to create assemblies that meet the exact blueprints of our OEM partners. We use high-silver-content brazing alloys and controlled atmosphere environments to ensure that every joint is molecularly sound, clean, and free from oxidation. This service is essential for manufacturers of air conditioners, chillers, and heat pumps who want to streamline their production lines, reduce labor costs, and eliminate the risk of joint failure in their finished products.

The core of a high-quality brazed assembly is "Repeatability." Our production facility utilizes precision jigs and fixtures to ensure that every assembly in a 10,000-unit run is dimensionally identical to the prototype. We specialize in complex geometries, including multi-port headers and "spaghetti" assemblies used in evaporator coils. Beyond brazing, we offer integrated services such as tube expansion, swaging, and the addition of brass or steel connectors. For the medical and refrigeration industries, we perform specialized "internal nitrogen purging" during the brazing process to prevent the formation of cupric oxide scale inside the tubes. This level of technical care ensures that our assemblies are "system-ready," helping our clients reach higher levels of manufacturing efficiency and product reliability.

Assembly Technical Parameters

PropertyAssembly Specification
Brazing Alloy2% - 15% Silver Phos-Copper Rods
Tube MaterialC12200, C10200, C70600
Joint Integrity100% Helium Leak Tested or Pressure Tested
Dimensional Tolerance±0.5mm to ±1.0mm
CleanlinessNitrogen Purged / Ultrasonic Cleaned
Connection TypesBrazed, Flared, Swaged, NPT Threaded
Surface TreatmentBare, Plated, or Powder Coated
CustomizationFull OEM/ODM per CAD Drawings
InspectionCMM Verification Available

Applications in Mass Production Environments

Brazed copper tube assemblies are primarily used by HVACR OEMs for the construction of Evaporator and Condenser Manifolds. They are also vital for VRF/VRV System Distributors and branching kits. In the appliance industry, they are used for the internal refrigeration circuits of commercial refrigerators and wine coolers. The automotive sector utilizes our assemblies for Oil Cooling Circuits and battery thermal management sub-units in electric vehicles. In the medical field, we provide pre-assembled gas manifolds for anesthesia machines and oxygen delivery systems. They are also found in industrial machinery as part of Hydraulic Control Manifolds and specialized cooling arrays for high-power lasers. By outsourcing these assemblies, manufacturers can focus on final product integration while we handle the specialized task of copper fabrication and joining.

Advantages of Outsourced Assemblies

The primary advantage is "Manufacturing Efficiency"—by receiving a finished assembly, you eliminate multiple steps from your production line, saving on labor, flux, brazing material, and cleaning costs. "Quality Assurance" is another major benefit; because we are specialists, we provide 100% leak testing, which is often more rigorous than what a general manufacturer can perform in-house. Our assemblies offer "Reduced Supply Chain Complexity"—instead of managing 20 different SKU numbers for pipes and fittings, you manage one part number for the assembly. We also provide "Technical Optimization," often suggesting design improvements that reduce the amount of copper used or improve the fluid flow within the header. Finally, our nitrogen-purged brazing ensures "Internal Purity," which is critical for preventing compressor failure in modern inverter-driven HVAC systems.

Logistics and JIT Delivery

Because assemblies are often fragile and bulky, we design custom packaging solutions for every client. This includes custom foam-lined crates or plastic trays that securely hold the assembly to prevent bending or joint stress during shipping. Payment is typically a combination of a tooling deposit and T/T for the production units. We offer "Just-In-Time" (JIT) delivery for our long-term OEM partners, maintaining a buffer stock in our warehouse to ensure your assembly line is never interrupted. We ship globally, providing full documentation including Mill Test Reports for the raw materials and a Certificate of Conformity for the final assembly. Our engineering team is available for virtual consultations to assist with design-for-manufacturability (DFM) before mass production begins.

  • Q: Do you use flux in your brazing process?
  • A: When brazing copper-to-copper, we use self-fluxing phosphorus-copper alloys. For copper-to-brass or steel, we use a minimal-residue flux and perform post-braze cleaning to prevent corrosion.
  • Q: Can you help us design the assembly?
  • A: Yes, our engineering department can review your fluid flow requirements and suggest the most efficient manifold layout to minimize pressure drop and material cost.
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 Brazed Copper Tube Assemblies and Brazed Copper Tube Assemblies 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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