Haining Grand Solar Water Heater Co., Ltd. [China]

super enrgy tubes ,no water inside it ,two point are closed ,high efficiency ,anti-freeze,absorption rised 12% then normal tubes

super energy tubes,no water inside it

CCC,CE,ISO9001

Specification: 1. Outer Diameter /Inner Diameter: Φ47/37mm; Φ58/47mm; 2. Length of Tube: 1500mm, 1800mm, 2000mm 3. Material: Borosilicate glass 3.3, Thickness of tube: 1.6mm, 2.0 mm; 4.Inner copper pipe:thickness:1.0mm5. Selective absorbing coating: Tri-elements coating (ALN/ALN-SS/CU) or AL-N-AL coating. 6. Thermal Expansion: 3.3*10-6/k 7. Absorption of Selective Coating: A =90% -93% (AM1.5)

super energy tube