Low-fin tube question.
Low-fin tube question.
(OP)
In a low-fin tube, is the I.D. typically made larger in the unfinned portion of the tube, as is shown in the diagram below:
http://www.furukawa.co.jp/copper/img/efl_ef1.gif
If so, why? I thought the fin grooves were machined out of a piece of tubing of uniform thickness.
Thanks.
-Christine
http://www.furukawa.co.jp/copper/img/efl_ef1.gif
If so, why? I thought the fin grooves were machined out of a piece of tubing of uniform thickness.
Thanks.
-Christine





RE: Low-fin tube question.
So it isn't that the i.d. is made larger in the unfinned portion, it's that the starting i.d. is left undisturbed in the unfinned portion.
Hypothetically.
Mike Halloran
Pembroke Pines, FL, USA
RE: Low-fin tube question.
We use this type several time in service where we couldn't change the footprint of an exising exchanger.
RE: Low-fin tube question.
When the tube is rolled, the ID is basically unchanged. The material for the tubes in basically take from the OD and the OD is the same as the plain end. The tune wall under the fine is generally one gauge less than the tube wall on the plain end.
Ken
Ken
KE5DFR
RE: Low-fin tube question.
That just a restate of unclesyd and txiceman, I think.