Work pipe + polyurethane rigid foam + high density polyethylene external protection pipe

In the heating industry, the demand of steam pipeline is increasing in recent years. With the increasingly standardization of urban construction, beautifying the city has become an inevitable development. The original overhead laying and pipe trench laying methods are gradually replaced by direct burial technology.

Working steel pipe + aluminum silicate felt + calcium silicate inorganic layer + high temperature resistant and flame retardant aluminum foil reflective layer + rigid polyurethane organic insulation layer + outer steel pipe + external anti-corrosion layer

At present, the operating pressure and temperature of secondary heating pipe network in China are basically below 0.8MPa and 85 ℃. Considering the corrosion, connection and cost of steel pipe and the suitability of plastic pipe, PE-RT II heat-resistant polyethylene pipe is used instead of steel pipe to prefabricate three in one hot water insulation composite pipe.

Working steel pipe + rigid polyurethane foam insulation layer + outer protection spiral air duct (galvanized pipe, aluminum plate, stainless steel plate)

Work pipe + nano aerogel + magnesium silicate tile + reflective film + polyurethane + external spiral spiral pipe (galvanized pipe, aluminum plate, stainless steel plate)

Work pipe + polyurethane rigid foam + FRP (composite material made of glass cloth and synthetic resin)

The outer sleeve of directly buried steam pipeline should ensure that the inner pipe and thermal insulation material operate in a strictly waterproof space. If the outer sleeve is damaged (caused by corrosion, mechanical damage, welding quality, etc.), the groundwater seeps into the insulation layer and evaporates into steam after the inner pipe is heated, which makes the interface temperature of the thermal insulation material and the outer surface temperature of the outer sleeve difficult to c

The outer sleeve of directly buried steam pipeline should ensure that the inner pipe and thermal insulation material operate in a strictly waterproof space. If the outer sleeve is damaged (caused by corrosion, mechanical damage, welding quality, etc.), the groundwater seeps into the insulation layer and evaporates into steam after the inner pipe is heated, which makes the interface temperature of the thermal insulation material and the outer surface temperature of the outer sleeve difficult to c

Steel pipe fittings + rigid polyurethane foam insulation layer + high density polyethylene external protection pipe

Steel pipe fittings + rigid polyurethane foam insulation layer + high density polyethylene external protection pipe

Steel pipe fittings + rigid polyurethane foam insulation layer + high density polyethylene external protection pipe

Steel pipe fittings + rigid polyurethane foam insulation layer + high density polyethylene external protection pipe

Bare valve + polyurethane insulation layer + high density polyethylene outer protective layer

Steel pipe fittings + high temperature resistant glass wool + steel external protection pipe fittings + anticorrosive coating