FIELD: heat insulation.
SUBSTANCE: proposed heat-insulated shaped unit , for example branch, T-piece or adapter is provided with heat insulation coat and outer solid polymer hydro-insulating envelope; heat-insulating coat on shaped unit is made from steel pipe and foamed polyurethane at working temperature of 120-130 C and hydro-insulating shaped envelope is made low-pressure polyethylene at density higher than 940 kg/cu m; mounted under polyethylene envelope of shaped unit is parallel with pipe axis are three conductors-indicators of remote control system corresponding to 3, 9 and 12 division of dial.
EFFECT: reduced heat losses; enhanced strength.
1 dwg
