In July 2015, Vertical slot head pipe component, applied in the air power water heater of the condenser, flat tube groove direction parallel to the header pipe length, 25 X2, flat tube slot 24.5 X2, spacing of 33 or 35.
But with gree, AO Smith condenser matching using air can water heater.
Header pipe A4343 / A3003 material Φ 20 x20 are available, and Φ 20 x1. 8 specifications of the pipe, or A4343/3005 Φ 20 x1. 5 tubes. The burst pressure can be more than 13.6 Mpa