| 摘要 |
Provided is an L-type turn-fin tube including a turn-fin which may provide excellent adhesiveness even with a tube having a small diameter, and a turn-fin type heat exchanger using the L-type turn-fin tube. The L-type turn-fin tube includes the tube and the turn-fin. A refrigerant moves in the tube. The turn-fin includes a base portion that is formed on one side of a bent portion obtained when a part of a groove portion recessed in a longitudinal direction is bent in the longitudinal direction, and a fin portion that is formed on the other side of the bent portion, wherein the base portion is spirally wound around an outer surface of the tube.
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