DN500 heating prefabricated directly buried foam insulation pipe

NegotiableUpdate on 01/05

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Overview

DN500 heating prefabricated directly buried foam insulation pipe is characterized by light weight, convenient handling, oil immersion prevention and good elasticity. Some polyurethane materials are also used in the manufacturing of car wheels and tires, which are more durable than ordinary rubber tires. Polyurethane insulation pipes are also used on computers that are used in every household nowadays, mainly for functions such as anti-static and increasing wear resistance. It also plays a very important decorative role in house decoration, such as being a great choice as a decorative strip, which is more beautiful than traditional decorative strips.

Product Details

　　DN500 heating prefabricated directly buried foam insulation pipe

Steel sleeve steel may undergo significant thermal expansion, and the stress on the elbow sleeve may also exceed the limit, so external fixing piers must be installed for steel sleeve steel pipelines in engineering. Before the construction of the external fixed pier, the laying work should be done well to make the pipeline perpendicular to the fixed pier; During construction, attention should be paid to the treatment of the foundation cushion layer; Strictly control the quality of steel bar binding, and avoid impacting the steel bar skeleton during concrete pouring. In addition, there should be high temperature resistance requirements for concrete performance, and the cushion layer should be extended along the axial direction of the pipeline as much as possible to reduce overturning. This will reduce the axial thickness of the concrete for the baffle support, which is conducive to the installation of the tidal pipe and expansion joint.

When using steel sheathed steam insulation pipes, the outer protective pipe of the steam buried insulation pipe is a steel pipe. The outer protective steel pipe is treated with anti-corrosion to protect the insulation layer from groundwater erosion, support the working pipe, and withstand certain external loads to ensure the normal operation of the working pipe. The common anti-corrosion processes for steam buried insulation pipes and outer protective steel pipes are epoxy coal tar and fiberglass winding, both of which have low cost and convenient construction.

Advantages of steel sleeve steel buried insulation pipe:

1. During the production process of steel sleeve steel buried insulation pipes, a leakage alarm line is installed. If a leakage problem occurs, it can be accurately detected through a detection system to locate the leakage point. This makes it easy to maintain and repair the pipeline, avoiding the drawbacks of large-scale excavation in the past, improving work efficiency, and reducing maintenance costs.

2. The insulation performance of steel sheathed steel buried insulation pipes is good, with extremely low heat loss, which can largely maintain the temperature of the transmission medium, and the insulation effect is 4-9 times higher than that of traditional insulation pipes.

3. The steel sleeve steel direct buried insulation pipe also has moisture-proof and anti-corrosion functions. The insulation layer on the surface of the steel sleeve steel direct buried insulation pipe can effectively isolate the invasion of air and water, and has * anti-corrosion effect,

4. The steel sleeve steel direct buried insulation pipe occupies a very small area, is easy to install, reduces the amount of earthwork excavation in civil engineering, lowers installation costs, and avoids large-scale air pollution.

5. The service life of steel sleeve steel buried insulation pipes is extremely long, generally up to 50 years under normal installation and maintenance.

6. The installation environment of steel sleeve steel buried insulation pipes is relatively simple, and they can adapt well to both water and soil. The construction is simple and has extremely low construction costs.

DN500 heating prefabricated directly buried foam insulation pipe

The insulation structure of steel steam insulated pipes with steel sleeves can be divided into the following two categories based on different sliding modes:

1. Internal sliding type: The insulation structure consists of a working steel pipe, aluminum silicate, drag reduction layer, microporous calcium silicate, insulation layer, stainless steel fastening steel strip, aluminum foil reflective layer, polyurethane insulation layer, outer steel pipe, and external anti-corrosion layer.

2. The external sliding insulation structure consists of a working steel pipe, a glass wool insulation layer, an aluminum foil reflective layer, a stainless steel fastening steel strip, a sliding guide bracket, an air insulation layer, an external protective steel pipe, and an external anti-corrosion layer.

Prefabricated insulation pipes for directly buried high-temperature steam are a type of underground pipeline that can be directly buried without concrete structures. The thermal expansion of the working steel pipe is carried out inside the outer pipe, thereby reducing material costs, shortening construction dates, and ensuring the safety of heating pipelines. They can be widely used safely in different temperature environments, especially for high-temperature steam pipeline projects. The operating temperature can reach 150 ℃ -450 ℃.

The steel sleeve and inner steel pipe are coated with a second degree inorganic zinc rich primer (temperature resistance ≥ 400 ℃) to prevent corrosion. The pipe ends are sealed with polyethylene film or three-layer PE cold wrapping tape to prevent moisture from entering before installation or water from entering during construction. The insulation material is wrapped with multiple layers of staggered seams, effectively reducing heat loss, while controlling the surface measures of the outer jacket to prevent the formation of cold bridges, thus ensuring the temperature control of the anti-corrosion layer of the outer jacket. Wrapping multiple layers of aluminum foil reflective layer with insulation material effectively reduces heat loss and makes the steam pipeline more economical and reasonable.

The anti-corrosion coating and cathodic protection are combined to protect the steel sleeve and outer steel pipe, which greatly increases the anti-corrosion service life. The drainage system adopts a fully enclosed form, with flexible layout, reasonable structure, and safety and reliability. The moisture discharge pipe on the steel casing can not only timely discharge humid gases, but also serve as an alarm signal pipe for daily operation. The thermal compensation of the pipeline adopts a high-quality corrugated pipe compensator, which is installed inside the casing and made in a direct burial form, without the need for an observation well. The construction operation is convenient and the construction period is short.

External sliding steel sleeve steam insulation pipe tee, reducing pipe tee, reducing pipe is generally used at the branch of steam pipe main line, providing necessary means for users to supply heat source. Our company's products have unique skills and experience in handling the above nodes. As well as the rigid polyurethane foam insulation layer between the steel pipe and the outer sleeve, the steel sleeve steel pipe double-layer outer sleeve steel sleeve steel insulation pipe insulation layer produces anti-corrosion pipes. When the outer sleeve is transferred to the insulation production line, its appearance should be checked to ensure that it is qualified products, the anti-corrosion layer should ensure its integrity, and scratches in the repair plan should be repaired according to the specifications The insulation treatment of pipe fittings nodes is mature and the quality is reliable. Suitable for conveying steam with medium temperature less than or equal to 350 ° C and working pressure not exceeding 1.6MPa. Its basic structure is: working pipe insulation layer outer protective pipe. According to different designs, the structure of steam insulation pipes can also include protective cushion layers, insulation radiation layers, and sliding supports.