Insulated Steel Pipe for Hot Water Transportation

Hot water transmission insulated steel pipes not only possess advanced technology and practical performance that is hard to match with traditional trench and overhead pipeline installations, but also offer significant social and economic benefits, making them a powerful measure for heating energy conservation. (1) Polyurethane insulated steel pipes working pipe: According to the technical requirements of the transmitted medium, either welded steel pipe, seamless steel pipe, or double-sided埋弧螺旋焊接钢管 are used. (2) Polyurethane insulated steel pipes insulation layer: Hard polyurethane foam plastic is employed. (3) Polyurethane insulated steel pipes protective sheath: High-density polyethylene or glass fiber is used. (4) Polyurethane insulated steel pipes leakage alarm line: During the manufacturing of high-temperature pre-fabricated directly buried insulated pipes, an alarm line is embedded in the insulation layer near the steel pipe. In case of leakage at any point in the pipeline, the alarm line conveys the signal, triggering an alarm on a specialized detection instrument and displaying the exact location and degree of leakage, enabling prompt notification to maintenance personnel to handle the leaking section and ensure safe operation of the heating network.

Pre-fabricated large-diameter hot water transmission thermal insulation steel pipes are made of black or yellow polyethylene plastic pipes with a predetermined wall thickness. Their functions include: 1) protecting the polyurethane insulation layer from mechanical damage by hard objects, and 2) corrosion and water resistance. The polyurethane composite material features dense pores, good fluidity, high toughness, and strength. Its wide physical property tolerance can meet various production process requirements of customers, and is suitable for different pipe sizes like 159mm. The density distribution is uniform, and it is also suitable for construction in low-temperature environments, especially for long-term use in polyurethane pre-insulated buried pipes. Product Introduction: Polyurethane pre-insulated buried pipes have excellent overall performance, strictly follow the process of blast cleaning and rust removal on the outer surface of steel pipes and corona treatment on the inner surface of the outer protective pipe to further improve the adhesion performance of the thermal insulation pipes.