heat pipe solar collector 1material:AL alloy 2SRCC,SOLARKEYMARK,ISO9001,CE 3europe standard,anti-freeze 4rockwool insulation ... Name:SOLAR KEYMARK and SRCC Certified Aluminium Alloy Heat-pipe Solar Collector (KHOS/P6-58/1800-15HP),solar ... resistant silver brazed copper header8. All stainless steel or aluminum alloy frame (439 grade SS)9. Black or Silver aluminium casing10 ...