Compound flue pipe (NT-I) compound flue pipe (fiberglass chlorine oxygen magnesium cement air conduit, be called the chlorine oxygen magnesium air conduit for short , also may be called the new generation environmental protection energy conservation type flue pipe changing the inorganic nature glass fiber reinforced plastics air conduit) being to replace the iron sheet flue pipe and the fiberglass flue pipe. Be a product's turn to be base from the two layer of inorganic material of high strength and a layer of heat insulator material, adopt combination , connection gumming the technology and peculiar structure. Sheet material adopt mechanization to give birth to a child , outside is glossy , neat, have improved the efficiency that air transports, the air leak rate is iron sheet flue pipe 10% only. Disregarding in giving birth to a child , making , assembling, still makeThe efficiency , air leak rate conveying are iron sheet flue pipe 10% only. In the process of usage or, not producing matter bad for the environment equally , not getting rusty , not becoming mildewed , not accumulating dust disregarding in giving birth to a child , making , assembling,there be no fiberglass flue pipe dust and fibre , there be no peculiar smell; The heat conduction modulus is low , thermal insulation property is extremely nice; Have fine sound insulation , sound-absorptive function, there be no the noise that the iron sheet flue pipe produces when contracting and dilating. Burning , resisting to break , be able to bear pressure , be under construction quickly, cost is low , life time often reaches 20