the series of pp-r tubular product sand fittings produced by zhejiang qiai tubing co., ltd are produced according to the standard technics of international iso/dis15874、din8077、din8078 and the company criterions q/zns002q-2001、q/zns003-2001 strictly. the quality of product and excellent service are guarranteed through our strict carrying out of iso9001-2000 quality assurance system. pp-r pipe advantage: 1). hygienic, non-toxic: they are can be applied to the purified and drinking water pipeline systems. 2). resistance to corrosion and scum: it prevents encrustation build-up in the pipes for thus enabling the free low of water and eliminates the formation of stains in a tub or basin. 3). high temperathre and high pessure resistant: the pipe can work under continuous normal working with the water temperature up to 95`c。 4). heat preservation&energy saved: heat conduction coefficient is 1/200 of metal pipes. in other words, it greatly minimizeds heat loss during the flow of hot water. 5). light weight: the specific gravity is 1/7 of metal pipes. 6). surface: smooth inner and outer layers of the pipes reduce the resistance to fluid, soft color and luster and beautiful appesrance. 7). convenient and reliable installation. 8). this pipe has a lifespan of 50 years or more under normal conditions. appliance: 1). pipe for hot and cold water pipeline system in residential area. 2). water pipes for industry and chemical liquids pipes for conveying and drainage. 3). pipeline for purified and drinking water. 4). pipe for conveying beverages and drugs. 5). other industral and agricultural applications.