... demand.3. Health, non-toxic, can be used for pure water, drinking water pipeline system, the product is ... of metal pipes1/200 only, hot water pipe insulation for excellent energy saving effect.8. Light weight, high ... Convenient and reliable installation: the use of the hot melt connection, no need to set silk, and it ... , airport, and so on;3. Pipe used for solar energy water heater;4. Coal gas and natural ...