... Split Pressurized solar water heater1.Heat pipe Vacuum tube specification: 58X1.8M,with heat pipe or with out heat pipe. 2.Valum of tank: 100L ... .Inner tank: SUS304-2B for food grade stainless steel, With thickness 2.0mm, and high pressurized,when the capacity is ... : Aluminmum material ,stainless steel SUS304-2B or glavanized steel, with excellent performance in Anti wind and snow.6.Heat preservation ...