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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale High Pressure Copper Tubing

High Pressure Copper Tubing

-- Steady & Reliable Manufacturer --

Engineered for Extremes: High-Pressure Copper Solutions

In the world of fluid and gas transport, "High Pressure" is where engineering meets safety. High pressure copper tubing is designed to withstand internal stresses far beyond the capabilities of standard plumbing or residential HVAC pipes. At Zhejiang Jingliang, our high-pressure tubes are characterized by their superior wall-thickness-to-diameter ratio and their high-tensile metallurgical grain structure. As refrigerants evolve towards eco-friendly alternatives like R410A, R32, and CO2 (R744), the operating pressures of HVAC systems have increased significantly. Our tubing is specifically formulated to handle these "Transcritical" pressures, providing a robust safety margin that protects both the equipment and the environment. We utilize high-purity C12200 phosphorus-deoxidized copper, which offers the best combination of strength, ductility, and resistance to "fatigue failure" under the constant pressure pulsing of a high-efficiency compressor.

The manufacturing of high-pressure tubing requires meticulous "Cold-Drawing" techniques that work-harden the metal to a specific "Hard" or "Half-Hard" temper. This increases the yield strength of the copper, allowing the tube to maintain its shape even when subjected to sudden pressure spikes (Water Hammer). Every meter of our high-pressure tubing undergoes non-destructive Eddy Current Testing (ECT) and 100% Hydrostatic Pressure Testing to verify the integrity of the wall. We focus on "Concentricity"—ensuring the wall thickness is uniform around the entire circumference of the tube—as even a minor thin spot can become a failure point under high pressure. Whether you are building a carbon-dioxide refrigeration system, a high-pressure hydraulic circuit, or a specialized industrial gas manifold, our high-pressure copper provides the structural certainty required for high-stakes engineering.

High Pressure Technical Parameters

PropertyHigh Pressure Specification
Material GradeC12200 (Cu-DHP), C70600 (CuNi for ultra-high)
Working PressureUp to 120 Bar (1,740 PSI) - Size dependant
Safety Factor3:1 or 4:1 (Per ASME B31.5)
Wall Thickness TypeHeavy Wall / Type K / Schedule 40/80
Temper RangeH58 (Hard) or H55 (Half-Hard)
Standard ComplianceASTM B280, EN 12735-1, JIS H3300
Concentricity±3% of Wall Thickness
Hydrostatic TestTested at 1.5x Rated Working Pressure
Surface ConditionPolished / Scale-Free Bright Annealed

Applications in Advanced Refrigeration and Hydraulics

High pressure copper tubing is the standard for CO2 (R744) Refrigeration Systems, which operate at much higher pressures than traditional HFC systems. It is also used in Industrial Hydraulic Lines, transporting fluid power to actuators in manufacturing machinery. In the medical sector, it is used for High-Pressure Gas Distribution (such as nitrogen or compressed air) in research labs and hospitals. The aerospace and automotive sectors use it for Fuel Injection Systems and specialized cooling circuits for high-performance engines. It is also essential for "Steam Service" in industrial laundries and power plants where thermal energy is moved under significant pressure. Furthermore, our high-pressure tubes are used as the primary conduits in Fire Suppression Systems (FM200/Novec 1230), where they must handle the rapid discharge of pressurized fire extinguishants during an emergency.

Advantages of Reinforced Copper Metallurgy

The primary advantage is "Safety and Reliability." Our high-pressure tubes are designed to prevent catastrophic ruptures, which could lead to refrigerant loss, equipment damage, or personal injury. "Corrosion Fatigue Resistance" is another key benefit; standard tubes can develop micro-cracks over time due to pressure cycles, but our refined grain structure is engineered to resist this fatigue. Compared to stainless steel, our high-pressure copper offers "Superior Thermal Conductivity," which is vital if the high-pressure line is also part of a heat exchange process. Our tubes are also "Easier to Braze"—the metallurgical purity of our copper ensures that brazed joints are as strong as the tube itself, which is a critical weak point in many high-pressure systems. Finally, the "Smooth Internal Bore" reduces turbulence at high flow velocities, improving the efficiency of the entire system and reducing the noise level during operation.

Testing, Certification, and Shipping

Because of the critical nature of high-pressure applications, we provide comprehensive documentation with every shipment. This includes Mill Test Certificates (MTR) showing the chemical composition and mechanical properties, as well as a "Pressure Test Certificate" for each batch. We package these tubes in reinforced, steel-strapped bundles with protective end-caps to ensure the sockets and ends are not damaged. Payment is typically T/T or L/C at sight. We ship globally from Ningbo, utilizing specialized dunnage in containers to prevent the heavy bundles from shifting. For ultra-critical projects, we can provide third-party inspection (SGS/BV) and destructive burst tests on sample pieces to verify the maximum pressure limits of the specific production run.

  • Q: Can I use standard fittings with high-pressure tubing?
  • A: No. High-pressure systems require specialized "High-Pressure" wrought copper or forged brass fittings designed to match the wall thickness and pressure rating of the tube.
  • Q: What is the maximum pressure copper can handle?
  • A: It depends on the OD and wall thickness. Small diameter (1/4") heavy-wall tubes can safely handle over 150 Bar, whereas larger tubes have lower limits. We can provide calculations based on your requirements.
  • Q: Is copper better than steel for high pressure?
  • A: Copper is easier to install, more corrosion-resistant, and has better thermal properties. For pressures within copper's range, it is often the more cost-effective and reliable choice.
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 High Pressure Copper Tubing and High Pressure 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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