LWC Copper Tubes
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LWC Copper Tubes

LWC copper tubes (Light Weight Coil) and inner grooved copper tubes (IGT) are widely used in air conditioning, refrigeration, and heat exchanger systems. These tubes offer excellent heat transfer efficiency, easy processing, and compact coil packaging, making them ideal for modern HVAC applications.

  • Superior Heat Transfer Efficiency: Internal grooves increase the inner surface area by 20–30% compared with smooth tubes. Optimized helix angle and fin geometry enhance nucleate boiling and condensation, helping improve SEER and EER performance in HVAC systems.
  • Cost-Effective Light Weight Coil (LWC): Designed for automated coil-fed heat exchanger production. The lightweight coil format reduces material waste during bending and expansion, lowers transportation volume, and minimizes welding points in final assembly.
  • High Cleanliness & Longevity: Continuous extrusion helps ensure stable tube integrity and zero leakage risk. Strict degreasing controls residual oil content to ≤ 2 mg/m², preventing capillary blockage in refrigeration circuits and extending compressor service life.
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Inner grooved copper tubes feature enhanced internal surface area, which significantly improves heat exchange performance and reduces system size. Vulroc Tube supplies high-quality LWC copper tubes and IGT copper tubes for air conditioners, condensers, evaporators, and refrigeration equipment.

Our products serve a wide range of industries:

  • Air Conditioning: Residential split AC, VRF systems, central air conditioners, window units.
  • Refrigeration: Commercial freezers, display cabinets, water coolers, refrigerators.
  • Heat Pumps: Heat pump water heaters, EV thermal management systems, dryers.

We adopt standardized and secure packaging methods:

  • Packaging: Each coil is wrapped in moisture-proof paper, secured on a wooden pallet, and covered with heat-shrink film to prevent oxidation.
  • Protective Atmosphere: Purged with nitrogen (N₂) and sealed with rubber plugs to protect the inner wall from oxidation during long-term storage or sea freight.
  • Handling: Pallet dimensions optimized for forklift loading. Coil weights are designed for both manual handling and automated production lines.

Technical

 Item

Specification
Material Grade TP2 / C12200 (Compliant with ASTM, EN, JIS, GB)
Outer Diameter (OD) 4 mm – 9.52 mm (Custom sizes available)
Bottom Wall Thickness 0.20 mm – 0.35 mm
Groove Geometry Helix Angle: 18° – 30°; Tooth Height: 0.10 – 0.25 mm
Number of Grooves 40 – 70 (High-density options available)
Package Form Light Weight Coil (LWC) – Level Wound / Pancake Coil
Coil Weight 10 kg – 50 kg per coil (Customizable)
Temper Soft (O) / Light Drawn

Quality

Certifications & Standards:

  • Quality Management: ISO 9001, IATF 16949 (for automotive thermal applications)
  • Product Safety: UL Certified (for the North American market)
  • Environmental Compliance: RoHS, REACH
  • Manufacturing Standards: ASTM B280, EN 12735-1, GB/T 20928

FAQ

1. What is LWC copper tube?
LWC stands for Light Weight Coil copper tube, supplied in continuous coil form.

2. What is inner grooved copper tube?
IGT copper tube has internal grooves to improve heat transfer performance.

3. What is the advantage of inner grooved tubes?
They increase heat transfer efficiency and reduce system size.

4. What material is commonly used?
C12200 copper (Cu-DHP) is most commonly used.

5. Are these tubes used for air conditioners?
Yes, widely used in air conditioning and refrigeration equipment.

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