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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Corrosion Resistant Copper

Corrosion Resistant Copper

-- Steady & Reliable Manufacturer --

Long-Term Integrity in Hostile Environments

While copper is naturally resistant to atmospheric corrosion, many industrial and marine environments require specialized "Corrosion Resistant Copper" solutions to survive decades of exposure. At Zhejiang Jingliang, we specialize in high-purity copper and copper-nickel alloys (such as C70600) specifically engineered to resist pitting, stress corrosion cracking, and biofouling. Whether buried in acidic soil, exposed to salt-laden ocean air, or used to transport corrosive chemicals, our tubing acts as a permanent barrier against material degradation. We achieve this through meticulous control of the phosphorus deoxidation process (C12200) and by offering specialized alloys that form a protective "patina" or oxide layer faster and more effectively than standard plumbing copper. This protective layer becomes a self-healing shield, ensuring that the structural integrity of the pipe remains intact even if the surface is scratched.

In marine and offshore industries, the ability to resist seawater corrosion is a critical safety requirement. Our corrosion-resistant tubing is used in desalination plants, oil rigs, and shipboard cooling systems where standard metals would fail in months. We also provide PVC-coated and tin-plated copper options for installations where external chemical protection is needed, such as in laboratory waste systems or industrial gas lines. Our manufacturing process includes vacuum annealing, which eliminates internal carbon residues that could otherwise lead to "pitting corrosion"—a common cause of pinhole leaks in lower-quality pipes. By investing in our corrosion-resistant products, engineers can design systems with a 50+ year service life, significantly reducing the total cost of ownership and the environmental impact associated with frequent material replacement.

Corrosion Performance & Metallurgy

PropertyCorrosion Resistance Spec
Material GradeC12200 (Cu-DHP), C70600 (90/10 CuNi)
Salt Spray Test> 1,000 Hours (ASTM B117)
Protective CoatingPVC, Polyethylene, or Tin-Plating
Internal FinishPitting-Resistant (Bright Annealed)
Copper Purity99.9% Minimum (C12200)
Biofouling ResistanceNatural (Inherent to Copper-Nickel)
Alloy ElementsControlled Ni/Fe/Mn (for CuNi alloys)
Operating pH RangeSafe between 6.5 and 9.5 (Untreated)
Grain Size Control0.015 - 0.040mm (ASTM compliant)

Applications in Marine and Chemical Industry

These tubes are the standard for Seawater Cooling Systems and fire mains on ocean-going vessels. In the energy sector, they are used in Offshore Oil and Gas platforms where salt air is constant. In the domestic sector, they are used for Underground Service Lines where the soil is known to be aggressive or acidic. They are also vital for Geothermal Heating systems, where they are buried deep in the earth to exchange heat with the ground. In the industrial chemical sector, they transport non-oxidizing acids and alkaline solutions. Furthermore, they are used in solar thermal systems that use aggressive heat-transfer fluids. Because of their biofouling resistance (which prevents barnacles and algae from sticking), they are used in submerged piping for aquaculture and marine sensors. Essentially, whenever a fluid must be moved through a "high-threat" environment, corrosion-resistant copper is the primary solution.

Advantages of Corrosion Protection

The primary advantage is "Zero Maintenance." Systems built with our corrosion-resistant copper often outlast the buildings or ships they are installed in, eliminating the need for expensive repairs. "Bio-Inertness" is another key benefit; copper naturally prevents the growth of microbes and marine organisms, keeping the internal bore of the pipe clean and maintaining high flow rates. Our "Internal Purity" ensures that the pipe is resistant to "Ant’s Nest" corrosion, a specific form of degradation caused by organic acids in HVAC systems. Additionally, the "Self-Healing Patina" means that the material actually becomes more stable over time as it interacts with its environment. Compared to plastics, our copper will not become brittle under UV exposure or crack under pressure. Finally, the "High Pressure Safety Factor" remains constant over the life of the pipe because the wall thickness does not significantly thin due to corrosion, unlike carbon steel or aluminum.

Logistics and Anti-Corrosion Packaging

Shipping corrosion-resistant copper requires special care to ensure it doesn't oxidize before it reaches the customer. We use specialized VCI (Volatile Corrosion Inhibitor) packaging that creates a molecular protective layer around the copper inside the crate. Payment is standard T/T or L/C. For marine projects, we provide full certification from organizations like ABS, Lloyd's Register, or DNV-GL to prove the material meets international maritime standards. We ship globally from our port-side facility, optimizing container space for both straight lengths and large coils. We also provide "Installation Kits" that include compatible corrosion-resistant fittings and brazing alloys to ensure the entire system has a uniform resistance profile. Every batch is traceable back to the raw material melt, ensuring 100% accountability for the alloy's chemical performance.

  • Q: Is copper resistant to chlorine in water?
  • A: Copper is resistant to standard municipal chlorine levels. For ultra-high concentrations, we recommend our Copper-Nickel alloys which are even more resilient.
  • Q: What causes pinhole leaks in copper?
  • A: Pinhole leaks are often caused by "carbon film" left inside pipes by poor manufacturing. Our bright-annealing process removes 100% of these residues, eliminating the risk of internal pitting.
  • Q: Do you offer coated pipes for underground burial?
  • A: Yes, we provide PVC-coated copper tubes specifically for underground use, adding a physical barrier to the natural chemical resistance of the copper.
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 Corrosion Resistant Copper and Corrosion Resistant Copper 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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