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 Click to enlarge image
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Grooved Tube for air-conditioners and refrigerators
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No
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Commodity
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Unit
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HRTO
736C
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HRTO
732C
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HRTO
941A
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HRTO
935B
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HRTO
936C
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HRTO
936H
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1
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Size
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mm
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7.94x0.36
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7.0x0.32
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9.52x0.41
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9.52x0.35
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9.52x0.36
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9.52x0.36
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2
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Groove
shape
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type
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C
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C
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A
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B
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C
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HEXA
|
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3
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Outside
Diameter
(O.D)
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mm
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7.94±0.05
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7.0±0.05
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9.52±0.05
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9.52±0.05
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9.52±0.05
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9.52±0.05
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4
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Inside
Diameter
(I.D)
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mm
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6.94
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6.16
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8.54
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8.68
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8.52
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8.52
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5
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Tolerance
on
Roundness
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mm
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0.5
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0.5
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0.5
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0.5
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0.5
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0.5
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6
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Bottom
wall
thickness
(TW)
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mm
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0.03±0.03
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0.27±0.03
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0.34±0.03
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0.30±0.03
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0.30±0.03
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0.30±0.03
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7
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Average
wall
thickness
(Ta)
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mm
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0.36
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0.32
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0.41
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0.35
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0.36
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0.36
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8
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Fin Height
(Hf)
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mm
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0.20±0.02
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0.15±0.02
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0.15±0.02
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0.12±0.02
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0.20±0.02
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0.20±0.02
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9
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Hilex Angle(ß)
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1.8±2
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1.8±2
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25±2
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18±2
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18±2
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1.8±2
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10
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Fin Top
Width(W1)
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mm
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-
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-
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-
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0.15±0.04
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-
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-
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11
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Fin Bottom
Width(W2)
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mm
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-
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-
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-
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0.24±0.04
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0.24±0.04
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-
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12
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Groove
Bottom
Width(W3)
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mm
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0.23±0.04
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0.13±0.04
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-
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0.23±0.03
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0.25±0.04
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0.25±0.05
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13
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No. of Fins(N)
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EA
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50
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60
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65
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60
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60
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60
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14
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Groove Shape
Angle(a)
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40±10
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53±10
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90±10
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-
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53±10
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40±10
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