Internally grooved copper tubes another trade name is “copper microfin tubes” are a small diameter coil technology for modern air conditioning and refrigeration systems. These Inner Grooved Copper Tubes are excellent in heat transfer compare to Copper smooth coils.
Inner diameter: 4.3mm – 14.22mm
Bottom wall thickness: 0.20mm – 0.50 mm
Total wall thickness: 0.35mm – 0.83 mm
Copper Microfin Tubes Specifications:
1) Standard Complied: ASTM B68, GB/T 20928
2) Grade: C11000, C12200, C2680, C27200, C27000, etc.
3) Temper: soft drawn or light soft drawn
4) Unit Weight: 34kg -270 kg
5) Outside diameter: 5.0mm – 15.8mm
6) Inner diameter: 4.3mm – 14.22mm
7) Bottom wall thickness: 0.20mm – 0.50mm
8) Total wall thickness: 0.35mm – 0.83mm
9) Fin Groove Depth: 0.15mm – 0.33mm
10) Widely for air conditioner, refrigerator, Gas, Water
11) ASTM B280/ B88
12) Grade: T1,T2,T3,TP2,Tu1,TU2,TU3,H59,H62,H63, H65
13) Alloy no.: C12200,C1220,CU-DHP, C106
1) Leak proof
2) Long lasting
3) Accurate groove designs
4) Corrosion resistant
5) High metallurgical strength
6) High temperature resistant
7) High-pressure resistant
8) Excellent heat transfer property
9) Good electrical conductivity, etc.
| Item | Symbot | Tolerances (±) | Dimensions | ||||
|---|---|---|---|---|---|---|---|
| Nominal Size | (mm) | 7×0.32 | 7.94×0.32 | 9×0.34 | 9.52×0.34 | 9.52×0.36 | |
| Nominal O.D. | O.D.(mm) | 0.05 | 7.0 | 7.94 | 9.0 | 9.52 | 9.52 |
| Nominal Wall Thickness | Tav(mm) | 0.32 | 0.32 | 0.34 | 0.36 | 0.36 | |
| Nominal I.D. | I.D.(mm) | 6.16 | 7.032 | 8.14 | 8.52 | 8.52 | |
| Bottom Thickness | TW(mm) | 0.03 | 0.27 | 0.254 | 0.28 | 0.30 | 0.30 |
| Fin Height | HF(mm) | 0.02 | 0.15 | 0.20 | 0.16 | 0.20 | 0.20 |
| Fin Width | WI | 0.05 | 0.188 | 0.270 | 0.246 | 0.255 | 0.220 |
| Top Angle of Fin | α | 10° | 40 | 40 | 44 | 44 | 53 |
| Helix Angle | β | 2° | 18 | 18 | 18 | 18 | 18 |
| Number of Fins | N | 0 | 60 | 50 | 60 | 60 | 60 |
| Fin Type | C | C | C | C | C | ||
| Weight Per Meter | (g) | 62 | 75 | 88 | 90 | 95 | |
Groove Type/ Code | Nominal Size | Outside Diameter | Inner Diameter | Bottom Wall | Groove Depth |
|---|---|---|---|---|---|
A-1 | 9.52x0.35 | 9.52±0.05 | 8.66±0.03 | 0.28±0.03 | 0.15±0.02 |
A-2 | 9.52x0.41 | 9.52±0.05 | 8.54±0.03 | 0.34±0.03 | 0.15±0.02 |
A-7 | 7.94x0.35 | 7.94±0.05 | 7.08±0.03 | 0.28±0.03 | 0.15±0.02 |
B-6 | 9.52x0.36 | 9.52±0.05 | 8.52±0.03 | 0.30±0.03 | 0.20±0.03 |
B-10 | 9.52x0.35 | 9.52±0.05 | 8.66±0.03 | 0.28±0.03 | 0.15±0.02 |
B-17 | 9.52x0.32 | 7.00±0.05 | 6.16±0.03 | 0.27±0.03 | 0.15±0.02 |
B-18 | 6.35x0.28 | 6.35±0.05 | 5.55±0.03 | 0.2±0.03 | 0.15±0.02 |
Groove Type/ Code | Total Wall Thickness | No. of Grooves | Lead Angle | Top Angle | Unit Weight gm/m |
A-1 | 0.43±0.05 | 65 | 25±2 deg | 90 deg | 94±2gms |
A-2 | 0.49±0.05 | 65 | 25±2 deg | 85 deg | 94±2gms |
A-7 | 0.43±0.05 | 65 | 17±2 deg | 90 deg | 94±2gms |
B-6 | 0.50±0.05 | 60 | 18±2 deg | 53 deg | 94±2gms |
B-10 | 0.43±0.05 | 60 | 18±2 deg | 53 deg | 94±2gms |
B-17 | 0.42±0.05 | 60 | 18±2 deg | 53 deg | 94±2gms |
B-18 | 0.40±0.05 | 45 | 18±2 deg | 50 deg | 94±2gms |
| Pipe / Tube Type | Nominal Pipe Size | O.D. | I.D. | Wall Thickness | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| K | L | M | DWV | K | L | M | DWV | |||
| Inner Grooved Copper Tubes | 1/4" | 3/8" | 0.305 | 0.315 | - | - | 0.035 | 0.030 | - | - |
| Inner Grooved Copper Tubes | 3/8" | 1/2" | 0.402 | 0.430 | 0.450 | - | 0.049 | 0.035 | 0.025 | - |
| Inner Grooved Copper Tubes | 1/2" | 5/8" | 0.527 | 0.545 | 0.569 | - | 0.049 | 0.040 | 0.028 | - |
| Inner Grooved Copper Tubes | 5/8" | 3/4" | 0.652 | 0.666 | - | - | 0.049 | 0.042 | - | - |
| Inner Grooved Copper Tubes | 3/4" | 7/8" | 0.745 | 0.785 | 0.811 | - | 0.065 | 0.045 | 0.032 | - |
| Inner Grooved Copper Tubes | 1" | 1-1/8" | 0.995 | 1.025 | 1.055 | - | 0.065 | 0.050 | 0.035 | - |
| Inner Grooved Copper Tubes | 1-1/4" | 1-3/8" | 1.245 | 1.265 | 1.291 | 1.295 | 0.065 | 0.055 | 0.042 | 0.040 |
| Inner Grooved Copper Tubes | 1-1/2" | 1-5/8" | 1.481 | 1.505 | 1.527 | 1.541 | 0.072 | 0.060 | 0.049 | 0.042 |
| Inner Grooved Copper Tubes | 2" | 2-1/8" | 1.959 | 1.985 | 2.009 | 2.041 | 0.083 | 0.070 | 0.058 | 0.042 |
| Inner Grooved Copper Tubes | 2-1/2" | 2-5/8" | 2.435 | 2.465 | 2.495 | - | 0.095 | 0.080 | 0.065 | - |
| Inner Grooved Copper Tubes | 3" | 3-1/8" | 2.907 | 2.945 | 2.981 | 3.030 | 0.109 | 0.090 | 0.072 | 0.045 |
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