Inner Grooved Copper Tube
Inner Grooved Copper Tube Application
The inner grooved copper tube is widely applied to the Air Conditioner, the Assembly Type Air Conditioning Unit, the Residential Central Air Conditioning. 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 plain tube, The inner grooved copper tube can also be applied to ShowCase Refrigerator which is in conformance with the developing tendency of the Air Conditioner and Refrigerator to the high efficiency, the energy saving.
The 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 the plain tube. Increased internal surface area, turbulent flow of refrigerant and uniform distribution of refrigerant around the periphery of 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 which can be gained from the 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:
Apex Angle(Tolerance) α 30 ~ 90
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:
Photographs are not to scale and do not represent detailed images of the respective products.
Above specifications are “general specifications” that pertain to the majority of our products. These specifications should only be used for general, informational purposes.
The measurement/size of the goods delivered may be different from the data in the above table, please check with us when order placed.
Other sizes can be made as per customer’s requirement according to mutual agreement.
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