What are the advantages of prefabricated direct buried insulation pipe

The prefabricated direct-buried thermal insulation pipe has excellent characteristics such as light bulk density, high strength, heat insulation, sound insulation, flame retardant, cold resistance, corrosion resistance, non-absorption, simple and convenient construction, and has become thermal insulation in industrial sectors such as construction, transportation, petroleum, chemical, electric power, and cold storage. Insufficient materials such as heat preservation, waterproof plugging, and sealing.

There are more and more types of insulation building materials on the market. Among them, polyurethane insulation products are enough for consumers to look at for a while. The average consumer is still very concerned about the price when purchasing, so I will take a look at The market price of polyurethane direct buried insulation pipe. Considering the overall market development trend, according to the development situation of polyurethane direct-buried insulation pipes, the price of direct-buried insulation pipes has been greatly reduced compared with the previous period, which is undoubtedly good news for consumers. The price factor is determined, let's take a look at the most important part, the technical parameters, how the polyurethane direct-buried insulation pipes provide heat.

Prefabricated direct buried thermal insulation pipe has become a relatively mature advanced technology in some developed countries abroad. In the past ten years, my country's heating engineering and technical personnel have digested and absorbed this advanced technology to promote the development of domestic pipe network laying technology to a higher level. The practical results over the past ten years have fully proved that the polyurethane thermal insulation direct buried pipe laying method has many advantages compared with the traditional trench and overhead laying. The direct-buried thermal insulation pipe is tightly combined with the steel pipe for conveying the medium, the high-density polyethylene outer pipe, and the rigid polyurethane foam insulation layer between the steel pipe and the outer pipe.

Since the birth of polyurethane synthetic material in the 1930s, prefabricated direct-buried insulation pipe has been rapidly developed as an excellent thermal insulation material, and its application range has become more and more extensive. It is also due to its construction prefabricated direct-buried insulation pipe specifications, prefabricated Directly buried insulation pipe, polyurethane foam insulation steel pipe In the pipeline system, the elbow is a pipe fitting that changes the direction of the pipeline. According to the angle, there are three most commonly used ones, and other abnormal angle elbows are also included according to engineering needs. The materials of the elbow include cast iron, stainless steel, alloy steel, forgeable cast iron, carbon steel, non-ferrous metals, and plastics. There are several ways to connect to the pipe: flange connection, hot melt connection, electrofusion connection, threaded connection, and socket type connection are the most commonly used methods of direct welding. According to the production process, it can be divided into welding elbow, stamping elbow, casting elbow, etc. Other names: degree elbow, right angle bend, love, and bend, etc. Polyurethane foam insulation steel pipe

(1) Polyurethane insulation steel pipe working steel pipe: according to the technical requirements of the conveying medium, seam steel pipe, seamless steel pipe, double-sided submerged arc spiral welded steel pipe are used.

(2) Polyurethane thermal insulation steel pipe insulation layer: use rigid polyurethane foam.

(3) Polyurethane thermal insulation steel pipe protective shell: high-density polyethylene or FRP.

(4) Polyurethane insulation steel pipe leakage alarm line: When manufacturing high-temperature prefabricated direct-buried insulation pipes, an alarm line is embedded in the insulation layer close to the steel pipe. Once the pipeline leaks somewhere, it can be transmitted through the alarm line. The special detection instrument alarms and displays the exact location of the water leakage and the size of the leakage degree, to notify the maintenance personnel to quickly deal with the leaking pipe section and ensure the safe operation of the heating network.

The use of density prefabricated direct-buried thermal insulation pipe for thermal direct-buried prefabricated polyurethane foam steel pipe has become a relatively mature advanced technology in some developed countries abroad. In the past ten years, my country's heating engineering and technical personnel have digested and absorbed this advanced technology, which is pushing the domestic pipeline network laying technology to a higher level. The practical results over the past ten years have fully proved that the polyurethane thermal insulation direct buried pipe laying method has many advantages compared with the traditional trench and overhead laying. The direct-buried thermal insulation pipe is composed of a steel pipe for conveying the medium, a high-density polyethylene outer pipe, and a rigid polyurethane foam insulation layer between the steel pipe and the outer pipe. This is exactly the heat supply project of polyurethane thermal insulation direct buried pipe in our country.