CE compact pressurized solar water heater

compact pressurized solar water heater Material and Features: Inner tank material:SUS304-2B stainless steel 0.4mm thickness,food grade,innocuity. Outer tank material:color steel 0.35mm thickness,antirust. Insulation layer between inner and outer tank:High density polyurethane foaming,50mm thickness. Vacuum tube material: borosilicate glass,threetargetvacuum tube with copper heat pipe. Vacuum tube QTY:20pcs. Water tank capacity:200L QtytubeTankcapacity(liters)16160L18180L20200L22220L24240L26260L28280L30300L36360L Vacuum tube size:Φ 58mm*1800mm(Length). Bracket material:stainless steel,1.5mm thickness. The glistening obliquity:45 degree Hail resistance:25mm. Wind stress:180km/h Freeze protection:-25 degree. Heat preservation:72Hours.