SRL-type air heater total of 37 kinds of specifications, which is the application of steel tube aluminum fin radiator tubes, so the aluminum and steel contact angle close, good heat dissipation, use and reliable. SRL radiator steam or hot water as the heat of coal, steam pressure up to 0.8Mpa, hot water temperature 160 ℃, applicable to the indoor air conditioning system heats the air. SRL radiator points along the direction of airflow in the second row of tubes and pipes arranged in three rows, the model example as follows: SRL-5 × 5 / 2- along the direction of airflow two staggered rows of tubes; SRL-5 × 5 / 3- smooth airflow direction of the three staggered rows of tubes