Inner tank 0.4mm SUS304 stainless steel
Middle polyurethane made by Bayer
Ourter tank 0.4mm color steel
Frame 1.5mm Zn steel

Material:

1. Inner tank: stainless steel SUS304 -0.4mm

2. Vacuum tube: QB-AL-N/AL-47-1500/58-1800mm

3. Outer tank: painted steel/stainless steel SUS304 -0.4mm

4. Frame: coated galvanized steel/stainless steel SUS304-1.5mm

5. Insulation material: polyurethane 55mm

Feaures:

a. High heat efficiency of the vacuum tube

b. Inner tank and out tank shell are welded by argon arc.

c. Heat insulation of water tanks adopts polyurethane foam, thickness 55mm.

d. Use high grade of material to keep pure hot water from the solar heater. And also for the steady structure.

e. It can be customised.