Products

Inner Grooved Copper Coil Tube

Product Description

The inner grooved copper coil tube features a smooth outer surface and a grooved inner surface. This ensures a higher heat exchange efficiency than traditional plain copper tube. It is primarily used in HVAC piping systems, air conditioner, air handling units, central air conditioner and freezers which is in conformance with the developing tendency of the air conditioning and refrigeration to the high efficiency, the energy saving.

Inner grooved copper coil 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 inside surface area of the inner grooved coil tube increases 65-100% than that of the same specification of plain copper tube, and the heat transfer coefficient is about 2-3 times of that of the same specification of the plain copper tube. By using the inner grooved copper tubes in fin block heat exchangers, the efficiency of the heat exchanger can be increased up to 30% depending on the application.

 

Material

The copper tubes are made in compliance with UNS C12200 (Cu-DHP) alloy, with copper content more than 99.90% and with phosphorous range of 0.015% to 0.040%

Standard: ASTM B743, EN 12735-2
 

Key Feature

More even and compact structure, highly precise dimension, normative and integrity groove shape

Smaller unit size with unchanged efficiency, saving in material cost

High heat transfer efficiency

Low interior surface residuum, easy to clean

Easy brazing and welding

High corrosion resistance

Individually packed by reel, 6-7 coils packed by one pallet

Technical Properties

Copper Alloy	Chemical Composition		Temper	Mechanical Property		Standard
	Copper %	Phosphorus %		Tensile Strength MPa	Elongation %
C12200	≥ 99.90	0.015-0.040	O60	≥ 205	≥ 40	ASTM B743
C12200	≥ 99.90	0.015-0.040	O50	≥ 205	≥ 40

Specifications

Size mm	Outside   Diameter mm	Bottom   Wall Thickness T mm	Groove   Depth H mm	Number   of Groove	Inclination             Angle	Fin   Angle
7x0.25+0.18	7	0.25	0.18	50	18	40
7x0.27+0.15	7	0.27	0.15	50	18	40
9.52x0.27+0.16	9.52	0.27	0.16	70	18	40
9.52x0.28+0.12	9.52	0.28	0.12	65	15	53
9.52x0.28+0.15	9.52	0.28	0.15	60	18	40
9.52x0.28+0.20	9.52	0.28	0.20	60	18	40
9.52x0.28+0.20	9.52	0.28	0.20	60	18	53
9.52x0.30+0.20	9.52	0.30	0.20	60	18	53
9.52x0.34+0.15	9.52	0.34	0.15	60	18	53
9.52x0.34+0.20	9.52	0.34	0.20	60	18	53
9.52x0.45+0.20	9.52	0.45	0.20	60	18	48
12.7x0.35+0.25	12.7	0.35	0.25	65	18	53
12.7x0.35+0.25	12.7	0.35	0.25	65	18	65
12.7x0.41+0.20	12.7	0.41	0.20	70	18	65
12.7x0.41+0.25	12.7	0.41	0.25	60	18	65
12.7x0.45+0.20	12.7	0.45	0.20	50	18	53
15.88x0.40+0.28	15.88	0.40	0.28	75	18	53