PERT undergrand heating pipe:German and ISO standard 2.healthy and non- ... 95 degree heat 4,normally use 50 years PRODUCTS:PPR PIPE FITTING, ppr pipes, pp-r fittings, PERT-AL ... Pipes,S-S-PPR PIPES. Features of PERT undergrand heating pipe1.Raw material: PERT2.Healthy and non-toxic, free ... Low noise, reduced by 40% compared to galvanized steel pipe fitting;9.variety of colors and excellent designs, suitable ...