Only INEX has been able to create a tube with internally spiraled fins capable of operating temperatures up to 2450°F. Our revolutionary finned tubes promise to expand the already enviable reputation of our composite tubes. Not only will these tubes deliver the same long life and superior heat transfer capabilities but they will literally pay for themselves. By stirring up the gas flame and simultaneously increasing the surface area to capture heat, these finned tubes increase combustion efficiency. It’s actually that simple!

Standard			Metric
Tube (o.d.)	Fin Height	Twist Rates (per revolution)	Tube (o.d.)	Fin Height	Twist Rates (per revolution)
2 3/8 inches	1/4 inch	12 inches	60.3 mm	4.8 mm	304.8 mm
3 1/4 inches	1/4 inch	12 inches	80.5 mm	4.8 mm	304.8 mm
4 1/2 inches	1/4 inch	20 inches	114.3 mm	4.8 mm	508 mm
2 3/4 inches	3/8 inch	18 inches	70 mm	9.5 mm	457.2 mm
Special fin lengths and twist rates available upon request.

Proven Cost Savings

INEX conducted a year long test in a pusher furnace. Though this was considered a conservative test, the results showed a 10.4% metered fuel savings. The furnace was rated at 600,000 BTU’s per hour and was operated at high fire approximately 60% of the available time. A savings of over 300,000 cubic feet of gas resulted in an annual savings exceeding $1220. With the cost of gas rising dramatically, plug in your own figures and see the savings a INEX Finned CRT can deliver to you! For more information, contact INEX with any questions you might have by referring to our Contact Information page or simply by filling out our Customer Feedback form.