солнечные продукты воды

Three parts Material and performance TankOuter tank color steel- strong corrosion resistance and acid and alkali resistance. Inner tank food grade sus304-2b one-time rolling unique technology and advanced machine, and adopt sphere & reinforcing rib structure, not easy to be leaking and transformative, can bear low pressure in a short time. Insulating layer imported polyurethane From Germany. Adopt whole foaming technology, foaming in the situation of high pressure and constant temperature. After foaming, go through curing, density is about 41-42kg/m ³,having the best Heat preservation function. Vacuum tubetwo glass tubes Borosilicate glass 3.3 selective coating AL-N-AL stainless steel holder Barium Getter maintain the vacuum, exposed the getter to high temperatures which causes the bottom of the evacuated tube to be coated with a pure layer of barium. The silver coloured barium layer will turn white if the vacuum is ever lost. This makes it easy to determine whether or not a tube is in good condition. Exhaust stern mouth ≤12mm mirror surface silver coloured barium layer Support: function: fix and support the solar water heater. The angle of frame is depend on local latitude.