O.D.(Inch) Bottom Wall Tickness 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 0.1970 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 0.2500 6.35 0.008 ~ 0.014 0.20 ~ 0.35 0.004 ~ 0.008 0.10 ~ 0.20 0.2750 7 0.010 ~ 0.016 0.20 ~ 0.41 0.004 ~ 0.010 0.10 ~ 0.25 0.3125 7.94 0.010 ~ 0.016 0.20 ~ 0.41 0.004 ~ 0.010 0.10 ~ 0.25 0.3750 9.52 0.010 ~ 0.016 0.20 ~ 0.46 0.004 ~ 0.012 0.10 ~ 0.30

	■ Apex Angle(Tolerance)a 30 ~ 90
	■ Helix Angle Deg(Tolerance) 15 ~ 30
	■ Number of Tooth(Number) 40 ~ 70

Application : Applied to the Air Conditioner, the Assembly Type Air Conditioning Unit, the Residential Central Air Conditioning, Show Case Refrigerator and so on.

The Inner Grooved Copper Tube has the following characteristics: the even and compact structure , the highly precise dimension , the normative and integrity goove 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 same specification of plain tube.It is widely applied to the Air Conditioning and Refrigeration Industry, which is in conformance with the developing tendency of the Air Conditioner to the high efficiency,the energy -saving, the environment-friendly and the healthy.