... heat pipe solar collector 1) solar Keymark, SRCC , CE and CCC 2) used for spit solar water heater heat pipe solar collectorThe ... preservation: 72 hours* Max. pressure bearing: 0.6MPa*solar Keymark, SRCC/ ISO9001:2008/CCC / CE certificate* 3 ... tube dimensions: 58mm x 1.8m4, Heat preservation: 72hrs 5, Hail resistance: 25mm 6, max pressure: 10 bar ... Pipe: anti-freezing > -35°C heat pipe solar collector