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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Heavy Duty Copper Pipes

Heavy Duty Copper Pipes

-- Steady & Reliable Manufacturer --

Structural Strength for High-Pressure Systems

Heavy duty copper pipes are the "Heavyweights" of the plumbing and industrial piping world, characterized by their significant wall thickness and exceptional pressure-bearing capabilities. Often classified as "Type K" in ASTM standards or "Table Y" in European standards, these pipes are engineered for the most demanding environments where safety and durability are the only priorities. At Zhejiang Jingliang, we produce heavy-duty pipes from high-density, phosphorus-deoxidized C12200 copper, ensuring that they can withstand extreme internal pressures, mechanical impacts, and high-velocity fluid flow without the risk of bursting or erosion. These pipes are the foundation of critical infrastructure, used in everything from underground municipal water mains to high-pressure steam lines in industrial power plants.

The manufacturing of heavy-duty copper requires specialized high-tonnage extrusion presses and rigorous quality control. Because these pipes are often used in "Life-Safety" applications—such as fire sprinkler systems in high-rise buildings or medical gas lines in hospitals—every length must be perfectly sound. Our heavy-duty pipes feature a thick, robust wall that provides a massive safety margin against accidental damage on construction sites. They are also highly resistant to the vibration and thermal expansion stresses found in large-scale mechanical rooms. While more expensive than standard tubing due to the higher copper content, the "Peace of Mind" and 100-year potential service life they provide make them the most cost-effective choice for permanent infrastructure projects. We offer these in hard-drawn straight lengths to maintain perfect alignment and structural rigidity across long spans.

Heavy Duty Technical Parameters

PropertyHeavy Duty (Type K) Spec
Wall Thickness1.0mm to 3.5mm (depending on OD)
Outer Diameter (OD)15.88mm to 219mm (5/8" to 8")
Material GradeC12200 (Cu-DHP), Hard Drawn
Burst Pressure RatingExceeds 2,000 PSI (for smaller diameters)
Standard ComplianceASTM B88, EN 1057, AS 1432
Tensile StrengthMin 310 MPa (45,000 psi)
Weight per MeterApprox. 30-50% higher than Type L
Straightness Tolerance< 1.0mm per meter
Hydrostatic TestTested at 1.5x max working pressure

Applications in Major Infrastructure

Heavy duty copper pipes are predominantly used for Underground Water Service Lines, where the thickness of the wall protects against the corrosive nature of soils and the weight of the earth above. They are the mandated standard for Fire Protection Systems in commercial buildings, ensuring that the water supply is never compromised during a disaster. In the medical sector, they are used for Medical Gas Main Risers, delivering high-purity oxygen to multiple floors of a hospital. Industrially, they transport High-Pressure Compressed Air, steam, and hydraulic fluids in manufacturing plants. They are also used in Marine Engineering for hull penetrations and main cooling lines on large vessels. Additionally, because of their thick walls, they are the preferred choice for radiant floor heating mains and district heating networks where the pipe is subjected to constant thermal cycling and high temperatures.

Advantages of the Heavy-Wall Format

The primary advantage is "Ultimate Reliability." The extra-thick wall acts as an insurance policy against pinhole leaks, erosion-corrosion, and mechanical damage. "High Pressure Tolerance" allows these pipes to handle surges and "Water Hammer" effects that would rupture standard piping. Another benefit is "Installation Rigidity"—the pipe does not sag, meaning it requires fewer support brackets and maintains a cleaner, more professional look in utility rooms. The heavy-duty format also offers superior "Corrosion Allowance," meaning the pipe can lose a small amount of surface material over decades without compromising its pressure rating. For the architect and engineer, it provides the highest "Fire Rating" of any piping material, as it will not melt or release toxic gases at standard building fire temperatures. Finally, the long-term ROI is unmatched; a heavy-duty copper system is a "once-in-a-building-lifetime" investment.

Logistics, Bundling, and Project Payment

Heavy-duty pipes are heavy and require specialized handling. We bundle them in high-strength hexagonal packs with steel strapping and heavy-duty plastic sleeves. For large municipal or hospital projects, we offer "Site-Specific Marking" on every pipe for easy traceability. Payment is typically T/T or L/C at sight, with project-based milestone payments available for massive infrastructure contracts. We optimize container loading to ensure the weight is distributed safely, preventing damage to the container or the pipes. Our proximity to Ningbo port ensures rapid dispatch for international tenders. Every shipment includes a full set of Mill Test Certificates (EN 10204 3.1) and third-party inspection reports (like SGS or BV) if requested by the project consultant.

  • Q: What is the difference between Type K and Type L?
  • A: Type K has the thickest wall and is for heavy-duty/underground use. Type L is standard for residential/commercial plumbing. Type K can handle roughly 20-30% more pressure.
  • Q: Do you offer heavy-duty pipes in coils?
  • A: While usually straight, we can provide soft-annealed heavy-duty coils for underground service lines that need to be unrolled in a trench.
  • Q: Can these pipes be used for high-pressure gas?
  • A: Yes, they are excellent for industrial gas lines, providing the mechanical strength and leak-proof security needed for volatile gases.
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 Heavy Duty Copper Pipes and Heavy Duty 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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