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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale LWC Copper Coil

LWC Copper Coil

-- Steady & Reliable Manufacturer --

Level Wound Coils: The Efficiency Driver for Modern Manufacturing

Level Wound Coils (LWC) represent the pinnacle of high-volume copper tube supply for original equipment manufacturers (OEMs). Unlike standard pancake coils, LWC is precision-wound in a traverse manner on a sturdy cardboard or plastic spool, allowing for significantly longer continuous lengths—often reaching several kilometers in a single coil. This format is specifically designed for automated production lines where downtime for coil changes must be minimized. At Zhejiang Jingliang, we utilize advanced "Continuous Casting and Rolling" (CCR) technology to ensure that every millimeter of our LWC meets the highest standards of dimensional accuracy and metallurgical purity. The tubes are typically made from C12200 Phosphorus Deoxidized Copper, which offers the perfect balance of conductivity and formability required for complex industrial bending and expansion processes.

The primary appeal of LWC lies in its ability to support high-speed manufacturing. When feeding a fin-pressing or hair-pin bending machine, the consistent tension and tangle-free winding of our LWC ensure that the machinery can operate at peak velocity without the risk of snagging or surface damage. We offer these coils in various states, from soft annealed to light cold-worked, depending on the customer's specific tooling requirements. Furthermore, our LWC undergoes a rigorous internal cleaning process to remove manufacturing lubricants, making it "refrigeration grade" and ready for use with modern refrigerants. By reducing the number of joints and the frequency of material handling, LWC not only saves labor costs but also minimizes the potential for leaks in the final product, such as air conditioning condensers and evaporators.

Technical Parameters & Coil Geometry

ParameterSpecification Details
Alloy GradeC12200 (Cu-DHP), C11000 (ETP)
Coil Weight100kg, 120kg, 150kg, up to 500kg
Outer Diameter (OD)4mm to 22mm (Customizable)
Wall Thickness0.25mm to 1.5mm
Spool DimensionsCore ID: 300mm/400mm; OD: 600mm-1000mm
Surface ConditionBright Annealed, Smooth, or Inner Grooved
Grain Size0.025mm - 0.045mm
Tensile Strength≥ 210 MPa (Soft), ≥ 245 MPa (Hard)
Residual Lubricant< 0.020 g/m² internal surface

Industrial & Automated Applications

LWC Copper Coils are the lifeblood of the Air Conditioning and Refrigeration (ACR) industry. They are fed directly into high-speed Hairpin Bending Machines to create the heat exchange loops found in residential and commercial AC units. Manufacturers of Automotive Heat Exchangers use LWC for the production of radiators and heater cores. In the appliance sector, LWC is used for Refrigerator Evaporator coils and water dispensers. Because of its long continuous length, it is also preferred for Solar Collector fabrication, where minimizing joints reduces the risk of thermal fluid leakage. Additionally, LWC is utilized in Electrical Terminal manufacturing and specialized plumbing manifolds where precision-drawn small-diameter tubing is required in bulk.

Maximized Productivity and Material Yield

The foremost advantage of LWC is "Operational Efficiency." By using 300kg+ coils instead of 15kg pancake coils, manufacturers reduce machine downtime by over 90%, leading to massive gains in daily output. "Superior Surface Quality" is another benefit; the traverse winding protects the tube from the rubbing and scratching that can occur in loose coils. Our LWC offers "High Dimensional Consistency," ensuring that automated feeders and expanders work flawlessly without jamming. From a cost perspective, LWC provides a "Higher Material Yield" by reducing the number of "butt-ends" or scrap pieces at the end of each coil. Furthermore, our "Customized Spooling" options allow the product to integrate seamlessly with existing uncoiling equipment, eliminating the need for expensive retrofitting in your facility.

Logistics for Heavy-Duty Coils

Due to the weight of LWC spools, we use reinforced wooden pallets and specialized plastic core supports to prevent crushing. Each coil is wrapped in anti-oxidation film and secured with high-tension banding. Payment terms are usually 30% T/T deposit and 70% against B/L. We ship via heavy-lift containers from Ningbo or Shanghai. For large-scale OEMs, we offer "Just-In-Time" (JIT) delivery schedules to minimize the customer's warehouse footprint. Every pallet is labeled with a detailed heat number and weight certificate for full traceability.

  • Q: What is the maximum weight per coil you can provide?
  • A: We can provide up to 500kg per coil, though 120kg-250kg is the standard for most automated lines.
  • Q: Do you offer LWC with inner grooving?
  • A: Yes, we specialize in Inner Grooved LWC for high-efficiency heat exchangers to enhance thermal transfer.
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 LWC Copper Coil and LWC Copper Coil 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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