The induction furnace and heating industry requires special grades of copper that may be made into special or standard coils of various characteristics in order to provide an efficient heating path.

Our CHIFF product is available, often immediately from inventory, to suit any induction requirement.

Cole Tubes Limited manufacture & stock a variety of circular, square and rectangular CHIFF for RF induction heating coils & high power transformers CHIFF is manufactured in high grade copper meeting, at least, the requirements of BS 2871 Pt2 C101/C103 CHIFF is supplied in the fully annealed condition for ease of manipulation.

Most sizes are possible in straight lengths or long copper coil tubing.

RECTANGULAR & SQUARE

The table shows common sizes for copper coil tubing.

METRIC
	OUTSIDE		MAJOR		20x	16x	12x	10x	8x	SWG in
MINOR	20	WALL	2.5
			2.0
			1.5
			1.0
			0.8
	16		2.0
			1.5
			1.0
			0.8
	12		2.0
			1.5
			1.0
			0.8
	10		2.0
			1.0
			0.8
	8		1.5
			1.0
			0.8
	6		1.5
			1.0
			0.8

	Usual size and wall thickness combination
	Popular sizes often available from stock

 

IMPERIAL
	OUTSIDE		MAJOR		3/4	5/8	1/2	3/8	1/4	1/8
					(0.75)x	(0.625)x	(0.5)x	(0.375)x	(0.25)x	(0.125)x
MINOR	3/4	WALL	10	0.128
			12	0.104
			14	0.080
			16	0.064
			18	0.048
	5/8		10	0.128
			12	0.104
			14	0.080
			16	0.064
			18	0.048
	1/2		10	0.128
			12	0.104
			14	0.080
			16	0.064
			18	0.048
	3/8		16	0.064
			18	0.048
			20	0.036
			22	0.028
	1/4		16	0.064
			18	0.048
			20	0.036
			22	0.028
	1/8		20	0.036
			22	0.028

	Usual size and wall thickness combination
	Popular sizes often available from stock

 

CUSTOM SIZES UP TO 2 in (50 mm) AVAILABLE ON REQUEST