... ,SGS High quality competitive price Best Regards Heat Pipe Solar Heater CollectorSpecifications Details:1. Tube Type: Heat Pipe(Borosilicate glass evacuated tube ... bar).2. Tube Size(Dia*Length): 58*1800mm3. Tube Quantity: 10,12,15,18,20,25,30 pieces.4. Manifold: ... Polyurethane+rockwool.7. Bracket: Stainless steel,Aluminum alloy,Galvanized steel.8. Working Pressure: 7 bar.9. Hail resistance: Ø30mm.10. ...