... reasonable price Flat Plate Solar Water Heater Specification1.The Flat Plate Solar Collector is some kind of ... *1m*70mm/80mm/90mm, 2m*1m flat solar collector, the water can rise to 55°C ... , heat pipe diameter: 22mm/25mm. Few welding line, high intension, and strong pressure resistance.4. ... efficient design, durable and economical for application of solar water heating system of residential, hotel, school ...