Knowledge of prefabricated direct buried insulation pipe

Prefabricated direct buried insulation pipe has become a more complete technical application in other developed countries, the prefabricated direct buried insulation pipe is composed of a steel pipe for transporting materials, a high-density polyethylene outer sleeve with high density, and a rigid polyurethane foam insulation layer between the steel pipe and the outer sleeve

Prefabricated direct buried thermal insulation pipe since the early 1920s, has always been a class of excellent thermal insulation materials and made rapid progress, its application standards have become more and more common, but also because of its construction of prefabricated direct buried thermal insulation pipe size, large diameter butt welding elbow is a pipe accessories to change the direction of the pipeline

Prefabricated directly buried insulation pipe features

The transportation and division of the liquid of the prefabricated direct buried thermal insulation pipe are closely integrated with polyurethane foam and thermal insulation materials. Its role is to maintain the temperature of the liquid inside the operation pipe, to avoid thermal convection with the outside world, resulting in the reduction of liquid temperature.

Such products are buried in the underground layer, which also increases the service life of the pipeline and saves costs. Its shell is a high-density polyethylene with high density, that is, pe pipe, also known as jacket leather. The colors are usually black and yellow, that is, black jacket and yellow jacket.

The directly buried prefabricated insulation pipe is used as the moisture-proof integrated material of building insulation materials, and the polyurethane rigid foam gets rid of the simple function of the general building materials - the non-insulation of moisture-proof, the non-moisture-proof of thermal insulation, and the defects of the ground waterproof layer and the insulation layer subsequently lose the insulation function if the water leakage occurs.

Application of prefabricated directly buried insulation pipe

Polyurethane rigid foam has the function of a variety of uses, and has many functions such as heat preservation, moisture proof, sound insulation, vibration absorption and so on. Excellent insulation characteristics.

The rigid polyurethane foam body has continuous tight skin and tends to 99% high strength interconnect wall closure, and has satisfactory non-water absorption, impact resistance and negative wind pressure resistance. Stable physical properties, long service life, no damage to the surrounding environment, good fire safety characteristics.

Prefabricated direct buried thermal insulation pipe is used in indoor and outdoor pipelines, central heating network, the operation life is more than 3-5 times higher than other thermal insulation anti-corrosion materials, and the service life can exceed 30-50 years