... the connection with aluminium fan among heat pipe reduces the heat transfer system of thermal. ... Co-Axial StructureGlass MaterialHigh Borosilicate 3.3 GlassExternal Pipe Diameter & Thicknessdia.=47±0.5mm &=1.6mm ... 1.6mm,dia.=70±0.5mm &=2.0mm, Internal PipeDiameter & Thicknessdia.=37±0.5mm &=1.6mm, ... 1.6mm,dia.=58±0.5mm &=1.6mm, Pipe Length1500mm, 1600mm, 1700mm, 1800mm, 1900mm, 2000mmAbsorptive Coating ...