... life: > 15years Wind resistance: 30m / s (11grade) Hail resistance: 35mm Borosilicate glass with copper exchanger Single tube weight: 1.5kg and 2 ... (mm): 14mm*50mm Exchange rate: > 95 percent Features: 1) Combines glass vacuum tube and copper heated pipe in one unit 2 ... conductive liquid in copper heated pipe 3) Without water in glass vacuum tube, product can be used in cold weather of ...
... G3/4Max pressure0.6 MpaSolar collector tube3.3 Borosilicate glass with N/Al coatingThickness of glass tube1.6mmVacuum tube tightnessP less than 0 ...
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