... pe100 raw materials PE-RT underground heating pipes 1.suitable for such heating as the living room, bedroom, ... 2.ISO9001,CEPE-RT underground heating pipes1. Ground heating system, it is suitable for such heating as the living room, ... the suitable density for pipe fittings to insert, heating after the time to stipulate, the fast one ... even flange, keep 2-5s, natural cooling. underground heating pipes