solar collector with heat pipe 1)keymark, EN12975, SRCC 2)Competitive Price 3)High quality, High performance Evacuated-tube solar collectorsIn this type of vacuum collector, the absorber strip ... copperTube length 1800mm1800mm1800mm1800mm850mm850mmPressure drop<5mbar(80L/h), 12mbar (150L/h) solar collector with heat pipe