... Thermal Solar ComponentCertificate:CE, KEYMARK, SRCC,ISO , CCC Specification 1.Heat pipe tube :High quality tri-elements coating tube(ALN/ALN-SS ... /CU),dia.58mm, length:1.8m or Dia.47mm,1500mm,inside is high quality copper pipe-thickness: 1mm 2.Inner direct ... -flow pipe: red copper pipe dia.:35mm,thickness:1 mm 3.Insulating layer ...