Inner Grooved Copper Tube
Inner Grooved Copper Tube, also known as Internal Groove Copper Tube or Microgroove Copper Tube, is a copper tube with regular spiral grooves machined into its inner wall, primarily used to improve heat transfer efficiency.
- Outer Diameter: 8-25mm (9.52mm is commonly used in household air conditioners)
- Wall Thickness: 0.20-0.30mm
- Groove Height: 0.10-0.25mm
What is Inner Grooved Copper Tube?
Inner grooved copper tube, also known as internal groove copper tube or micro groove copper tube, is a copper tube with regular spiral grooves machined into its inner wall, primarily used to improve heat transfer efficiency. It is widely used in heat exchangers of refrigeration equipment such as air conditioners and refrigerators, and is one of the key components for efficient heat transfer.
It significantly increases the heat transfer area through the threaded structure on the inner wall, achieving 20%-30% higher efficiency than ordinary smooth tubes, and is specifically designed for applications requiring high-efficiency heat exchange, such as condensers and evaporators.
Inner Grooved Copper Tube Features
Material: TP2 pure copper (high-purity copper)
Structure: Inner wall with regular threads, smooth outer wall
Advantages: High-efficiency heat transfer, reduced energy consumption
Inner Grooved Copper Tube Specifications and Parameters
Outer Diameter: 9.52-12.7mm (9.52mm is commonly used in household air conditioners)
Wall Thickness: 0.20-0.30mm
Groove Height: 0.10-0.25mm
Tube Material: Carbon Steel, Stainless Steel, Aluminium, Copper, Brass, Titanium
SB111 C12200/ C68700/C44300 /C71500 /C70600
SA179/SA192/SA106/SA334 Gr.6/SA106Gr.B/SA210 A1/ SA213 T11
SA213 TP316L/TP304/ A789 S32205/ SB167 N06625/UNS08825 ASTM B338 Gr2
Bare tube OD: 8-25mm Fin Pitch: 32FPI-19FPI Fin Height: 0.6-1.5mm Fin Thick: 0.25-0.33mm (fin top)
Inner Grooved Copper Tube Applications and Market
Main Applications: Air conditioners, refrigerators, and other refrigeration equipment. Inner Grooved Copper Tube are mainly used in the condnsers and evaporators for air cooler and refrigerator, absorption refrigerator, oil cooler and other heat exchangers. And other industries such as coal power stations, nuclear power stations, boat heat exchangers, air cooler. Heat recovery system, dryers and heaters in chemical industries.
RFQ
1.Inner Grooved Copper Tube for Evaporator —— January 28, 2026
1.Copper External groove copper for evaporator tube replacement
3/4″ x 1.07 mm x 5.8 m = 60 pieces
1″ x 1.22mm x 5.8m = 11 pieces
- Datasheet
- Drawing
- Certificates
Data sheet of Integral Internal Grooved Low Finned Tubes
| MATERIAL | OD | WALL THK | PITCH mm | FIN Hmm | WALL THK UNDER FIN mm |
| 304,316,10#,20#, 2205,SB338 GR.2 | Φ16 | 1.2 | 0.8-1.33 | 0.8-1 | 0.8 |
| Φ16 | 2 | 0.8-1.33 | 0.8-1.45 | 1.6-1.2 | |
| Φ19 | 2.1 | 0.8-1.33 | 1-1.45 | 1.6-1.2 | |
| Φ19 | 2.77 | 0.8-1.33 | 1-1.45 | 2.3-1.6 | |
| Φ25 | 2 | 0.8-1.33 | 1-1.45 | 1.5-1.2 | |
| Φ25 | 2.77 | 0.8-1.33 | 1-1.45 | 2.3-2.1 | |
| Φ28 | 2.77 | 0.8-1.33 | 1-1.45 | 2.5-2.1 |
Inner Grooved Copper Tube Appearance Dimension Inspection
Inner grooved copper tubes appearance dimension inspection is one of the important links to ensure the quality and performance of fin tubes.
The inspection items mainly include fin height, fin spacing, fin thickness, base tube wall thickness and outer diameter, etc.
Low Finned Tube Machine
The low-finned tube machine can produce bare tubes with OD: 8-25mm, fin pitch: 32FPI-19FPI, fin height: 0.6-1.5mm, and fin thickness: 0.25-0.33mm.
Tube Material: Carbon Steel, Stainless Steel, Aluminium, Copper, Brass,Titanium
Capacity: Four finning lines, daily capacity of approximately 9000 meters.
Inner Grooved Copper Tube Features
Inner grooved copper tube features precise inner grooves and uniform wall thickness, enabling efficient secondary processing like cutting, bending, and welding. Its excellent machinability reduces tool wear, ensuring high accuracy in drilling and forming. Ideal for HVAC, refrigeration, and heat exchange systems, it enhances production efficiency and product reliability.
Inner Grooved Copper Tube Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
