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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Rectangular Copper Tube

Rectangular Copper Tube

-- Steady & Reliable Manufacturer --

Structural Integrity and Electromagnetic Precision

Rectangular copper tube (also known as rectangular bus-pipe or hollow conductor) is a specialized form of copper tubing used where circular pipes cannot meet the geometric or functional requirements of a system. At Zhejiang Jingliang, we manufacture rectangular tubes with sharp or radius corners using high-precision drawing blocks. Unlike standard plumbing pipes, these tubes are often used in "High-Current Electrical Applications" and "Advanced Induction Heating." The flat surfaces of a rectangular tube provide a superior contact area for mounting power electronics or connecting to busbars, while the hollow center allows for the circulation of liquid coolant (water or oil). This makes them the "Hollow Conductor" of choice for the world’s most powerful magnets, particle accelerators, and industrial melting furnaces.

Beyond electrical use, our rectangular tubes are highly sought after for "Architectural and Decorative" purposes. The clean, 90-degree lines provide a modern aesthetic for high-end furniture, window frames, and curtain wall supports. We produce these tubes in C11000 (ETP) copper for maximum electrical conductivity and C12200 for structural or plumbing use. The manufacturing challenge lies in maintaining "Wall Thickness Uniformity" at the corners; our process ensures that the corners are not thinned out during the drawing stage, preserving the tube's burst pressure and structural rigidity. Whether you need a small rectangular tube for a waveguide in a radar system or a massive section for an induction coil, Jingliang provides the dimensional accuracy and surface finish required for high-tech engineering.

Geometric & Electrical Specifications

FeatureTechnical Specification
Dimensions (W x H)10mm x 5mm up to 200mm x 100mm
Wall Thickness1.0mm - 12.0mm
Corner TypeSharp Square or Radius (R0.5 - R5.0)
Copper GradeC11000 (99.9% ETP) / C12200 (DHP)
Electrical Conductivity≥ 100% IACS (for C11000)
Straightness≤ 1.0mm per meter
Twist Tolerance≤ 0.5° per meter
TemperHard (H58), Half-Hard (H55), or Soft (O60)
Internal FinishClean & Smooth for Coolant Flow
StandardASTM B187 / B188 (Electrical)

Induction Furnaces, Busbars, and Waveguides

The primary application for rectangular copper tubes is in "Induction Heating Coils," where they carry high-frequency current on the surface while water flows through the center to prevent melting. They are essential in "Switchgear and Transformers" as hollow busbars, providing high amperage capacity with an integrated cooling path. In "Particle Accelerators" and MRI machines, they form the core of high-intensity electromagnets. In the "Telecommunications" sector, high-precision small rectangular tubes serve as "Waveguides" for microwave and radar signals. Architecturally, they are used for "Heavy-Duty Handrails," decorative facades, and structural supports in luxury retail interiors. They are also found in "Electric Vehicle (EV) Charging Stations" and high-power battery cooling manifolds where space is restricted to a flat profile.

Space Optimization and Dual-Function Performance

The "High Packing Factor" of rectangular tubes is a major advantage; they can be stacked or wound much more tightly than round tubes, which is critical for "Compact Magnet and Coil Designs." They offer "Dual-Function Capability," acting as both a high-capacity electrical conductor and a high-efficiency cooling conduit simultaneously. Our "Superior Dimensional Precision" ensures that internal components or busbar connectors fit perfectly every time, "Reducing Assembly Labor." The "Flat Mounting Surface" allows for direct bolting of IGBTs or other heat-generating components, providing "Direct-Contact Thermal Management." Copper’s "Excellent Corrosion Resistance" ensures that the internal cooling channels do not clog with rust over time. Furthermore, the "Aesthetic Uniformity" of our tubes makes them a favorite for architects who require "Sharp, Clean Lines" for exposed structural elements that must also withstand the test of time.

Packaging for Geometric Precision

Rectangular tubes must be protected from "Twisting" and surface scratching. We package them in rigid wooden crates with internal bracing to maintain straightness. For electrical-grade tubes, we use "Vacuum Packing" or VCI paper to prevent surface oxidation. Payment is 30% T/T and 70% L/C. Shipping is conducted from Ningbo Port. Every shipment includes "Dimensional Inspection Reports" and "Conductivity Testing" results. We offer "Custom Length Cutting" and "Edge Deburring" to ensure the tubes are ready for immediate use in your assembly line, whether for structural or electrical purposes.

  • Q: Can you provide rectangular tubes with very sharp internal corners?
  • A: Yes, our specialized drawing dies can achieve tight internal radii, which is often required for specific waveguide and busbar applications.
  • Q: What is the maximum length you can ship?
  • A: We typically ship in 3-meter or 6-meter lengths, but custom lengths up to 9 meters can be arranged for large-scale busbar projects.
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 Rectangular Copper Tube and Rectangular Copper Tube 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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