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The copper tube is twisted to form with spiral groove on outer surface. Since there is cavity in the cross-section of spiral groove, such tube can be twisted randomly and be installed in narrow space.
It is suitable for double pipes heat exchanger in machine unit.
Outside Diameter: 9.52mm-22mm
Nominal Wall Thickness: 0.5-1.5mm
Number of Thread Head: 3-4
Pitch: 3-12mm
Groove Depth: 0.8-4mm
Length: Max.5m |
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| SPIRAL TUBE Technical Specification |
Outside
Diameter |
Tolerances of Wall Thickness (±) |
Average 0.D |
Tolerances |
0.35 |
0.41 |
0.5 |
0.6 |
0.7 |
0.75 |
0.8 |
1.0 |
1.2 |
12.7 |
0.05 |
- |
0.05 |
0.05 |
0.05 |
0.06 |
0.06 |
0.06 |
0.08 |
0.08 |
15.88 |
0.06 |
- |
- |
- |
0.06 |
0.06 |
0.06 |
0.08 |
0.08 |
0.10 |
18 |
0.06 |
- |
- |
- |
0.06 |
0.06 |
0.08 |
0.08 |
0.10 |
0.10 |
19.05 |
0.06 |
- |
- |
- |
- |
0.07 |
0.08 |
0.08 |
0.10 |
0.12 |
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| Length of Tolerances (mm) |
Tube Length (mm) |
Tolerances |
0.D＜25 |
0.D＞25 |
<600 |
O/+2 |
O/+3 |
600-1800 |
O/+3 |
O/+3 |
1800-4200 |
O/+6 |
O/+6 |
4200-1000 |
O/+10 |
O/+10 |
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| Mechanical Characteristic of Copper Tube |
Temper |
Tensile Strength (Mpa) |
Elongation (%) |
Hardness Hr15T |
Grain Size (mm) |
Hard |
＞294 |
- |
＞100 |
- |
1/2 Hard |
245-314 |
- |
80-100 |
- |
1/4 Hard |
＞206 |
＞40 |
＜65 |
＜0.040 |
Annealed |
＞206 |
＞40 |
＜60 |
0.025-0.060 |
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