Features of construction
Type of heat collecting tube: 47-1500mm; 58-1800mm; 70-2100mm;
Material of inner shell: Sus303-2B food class stainless steel
Material of outer shell: Brand new fluorine-titanium aluzinc
Heat preservation layer: 50-70mm polyurethane overall foaming
Material of bracket: Imported aluzinc plate, molding with pattern

Product Description
1. Water tanks are made by machine. Flower design pressed on aluminum alloy(or stainless steel) shell, beautiful and durable. Inner water tank is made of super SUS303 food grade stainless steel plates, welded by argon arc. Water is pure and drinkable.
2. Warm keeper of water tanks adopts polyurethane's celluar, thickness is 60mm.
3. Aluminum alloy(or stainless steel) supports are connected by bolts and nuts, firm and stable, easy to install.
4. The tubes and supports are adjustable, power bearing is average, and can assure the vacuum tubes to use long time.

* Performance Datas Vacuum Tubes
1. Whole glass vacuum tubes adopt super hard borax and silica glass;
2. Absorb rate: 93%, thermal radiation rate: 6%(100)
3. Temperature when exposed to sun without water: 250C, 2.5hours to boiling if using single tube;
4. Resist 25mm hail, using life can last 15 years.