Inner Grooved Copper Tube
Inner Grooved Copper Tube Application:
the even and compact structure, the highly precise dimension, the normative and integrity groove shape, the low interior surface residuum, etc., the inside surface area increases 65～100% than that of the same specification of plain copper tube, the heat transfer coefficient is about 1.8～2.0 times of that of the same specification of the plain tube, inner grooved copper tube is widely applied to the Air Conditioner, the Assembly Type Air Conditioning Unit, the Residential Central Air Conditioning, ShowCase Refrigerator which is in conformance with the developing tendency of the Air Conditioner and Refrigerator to the high efficiency, the energy saving.
Inner Grooved copper tube is to improve the heat transfer characteristics of copper tubes and heat exchangers, the inner surface of the tube is provided with spirally running grooves. The heat transfer coefficient of these tubes is about 2～3 times higher than that of the same specification of a plain tube. Increased internal surface area, turbulent flow of refrigerant and uniform distribution of refrigerant around the periphery of the tube cause increment of efficiency. By using the I.G tubes in fin block heat exchangers, the efficiency of the heat exchanger can be increased up to 30% depending on the application. In general, advantages that can be gained from usage of I.G tubes are: smaller unit size with unchanged efficiency, saving in material cost, space savings, smaller fan, and reduced noise level, smaller compressors, and energy saving.
Inner Grooved Copper Tube Standard:
ASTM B280, ASTM B68 standard, EN 12735 standard, AS 1571 standard, and JIS H3300 standard.
Temper: O60
Inner Grooved Copper Tube Package:
packed individually by reel, 6-7 coils packed by one pallet
Inner Grooved Copper Tube Product Code
| Product Code | Description |
| HTCD4 | Inner Grooved Coil 4mmxLWC, soft annealed |
| HTCD476 | Inner Grooved Coil 3/16″xLWC, soft annealed |
| HTCD5 | Inner Grooved Coil 5mmxLWC, soft annealed |
| HTCD6 | Inner Grooved Coil 6mmxLWC, soft annealed |
| HTCD635 | Inner Grooved Coil 1/4″xLWC, soft annealed |
| HTCD7 | Inner Grooved Coil 7mmxLWC, soft annealed |
| HTCD794 | Inner Grooved Coil 5/16″xLWC, soft annealed |
| HTCD952 | Inner Grooved Coil 3/8″xLWC, soft annealed |
Inner Grooved Copper Tube Technical Data
| O.D. | Bottom Wall Thickness Tw | Fin Groove Depth Hf | |||
| Inch | mm | Inch | mm | Inch | mm |
| 0.1575 | 4 | 0.008~ 0.012 | 0.20 ~ 0.30 | 0.004~ 0.006 | 0.10 ~ 0.15 |
| 0.1875 | 4.76 | 0.008~ 0.014 | 0.20 ~ 0.35 | 0.004~ 0.006 | 0.10 ~ 0.15 |
| 0.197 | 5 | 0.008~ 0.014 | 0.20 ~ 0.35 | 0.004~ 0.006 | 0.10 ~ 0.15 |
| 0.2363 | 6 | 0.008~ 0.014 | 0.20 ~ 0.35 | 0.004~ 0.008 | 0.10 ~ 0.20 |
| 0.25 | 6.35 | 0.008~ 0.014 | 0.20 ~ 0.35 | 0.004~ 0.008 | 0.10 ~ 0.20 |
| 0.275 | 7 | 0.01~ 0.016 | 0.20 ~ 0.41 | 0.004~ 0.010 | 0.10 ~ 0.25 |
| 0.3125 | 7.94 | 0.01~ 0.016 | 0.20 ~ 0.41 | 0.004~ 0.010 | 0.10 ~ 0.25 |
| 0.375 | 9.52 | 0.01~ 0.016 | 0.20 ~ 0.46 | 0.004~ 0.012 | 0.10 ~ 0.30 |
Please be noted:
Helix Angle Deg(Tolerance)β15 ~ 30
Number of Tooth(Number) 40 ~ 70
Inner Grooved Copper Tube Specification
| Specification | Outside Diameter (mm) |
Bottom Wall Thickness (mm) |
Groove Depth Hf (mm) |
Number of Groove | Inclination Angle (Degree) |
Fin Angle (Degree) |
| 7.00*0.25+0.18 | 7 | 0.25 | 0.18 | 50 | 18 | 40 |
| 7.00*0.27+0.15 | 7 | 0.27 | 0.15 | 50 | 18 | 40 |
| 9.52*0.27+0.16 | 9.52 | 0.27 | 0.16 | 70 | 18 | 40 |
| 9.52*0.28+0.12 | 9.52 | 0.28 | 0.12 | 65 | 15 | 53 |
| 9.52*0.28+0.15 | 9.52 | 0.28 | 0.15 | 60 | 18 | 40 |
| 9.52*0.28+0.20 | 9.52 | 0.28 | 0.20 | 60 | 18 | 40 |
| 9.52*0.28+0.20 | 9.52 | 0.28 | 0.20 | 60 | 18 | 53 |
| 9.52*0.30+0.20 | 9.52 | 0.30 | 0.20 | 60 | 18 | 53 |
| 9.52*0.34+0.15 | 9.52 | 0.34 | 0.15 | 60 | 18 | 53 |
| 9.52*0.34+0.20 | 9.52 | 0.34 | 0.20 | 60 | 18 | 53 |
| 9.52*0.45+0.20 | 9.52 | 0.45 | 0.20 | 60 | 18 | 48 |
| 12.7*0.35+0.25 | 12.7 | 0.35 | 0.25 | 65 | 18 | 53 |
| 12.7*0.35+0.25 | 12.7 | 0.35 | 0.25 | 65 | 18 | 65 |
| 12.7*0.41+0.20 | 12.7 | 0.41 | 0.20 | 70 | 18 | 65 |
| 12.7*0.41+0.25 | 12.7 | 0.41 | 0.25 | 60 | 18 | 65 |
| 12.7*0.45+0.20 | 12.7 | 0.45 | 0.20 | 50 | 18 | 53 |
| 15.87*0.4+0.28 | 15.87 | 0.40 | 0.28 | 75 | 18 | 53 |
| 15.87*0.4+0.28 | 15.87 | 0.40 | 0.28 | 60 | 18 | 53 |
| 15.87*0.58+0.3 | 15.87 | 0.58 | 0.30 | 75 | 18 | 48 |
Note: This is just part of the standard parameters of our products. Please contact our Engineer if you need more. And the information contained within this webpage is for guidance only and is subject to change without notice or liability. All dimensions and specifications are nominal and are subject to normal manufacturing tolerances. All pictures shown are for illustration purposes only. The actual product may vary. All the information is provided in good faith and is believed to be correct at the time of publication.
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