This product Qty. of solar tubes 20pcs Flat panel solar Diameter of solar tube 70mm Length of solar tube 1.7M Qty. of solar tubes 30pcs 1) Metal-glass evacuated tubes with Heat pipe provide 10% higher efficiency solar collection than normal all-Glass tubes 2) Able to be used in all climates 3) Copper Heat pipes for rapid heat transfer 4) Easy plug-in installation for mounting on the roof or at ground level 5) Maintenance free 6) Suitable for mains pressure water (up to 8bar / 116psi) 7) Corrosion resistant silver brazed copper header 8) Frame material: 304 2B grade standard steel 9) Casing material: 304 2B stainless steel 10) Excellent insulator in glass wool 11) Collectors may be connected in series to increase water heating capacity 12) Tubes easily replaced if broken - can be used with broken tubes 13) Ideal for commercial solar water heating applications If you are interested in our products, you can come to our official website, official website of the above can also contact information to understand the products you need more information. http://www.china-solar-water-heater-product.com |