Laiwu City Directly Buried Steam Insulated Pipe

厚度：

2、3、4

芯材：

聚氨酯

形状：

圆形

Specializing in the production of steel sleeved steel directly buried steam insulation pipes price product description: > In the pipeline system, elbows are pipe fittings that change 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 the project needs. The materials of the elbow include cast iron, stainless steel, alloy steel, forged cast iron, carbon steel, non-ferrous metals and plastics. The methods of connection with pipes include: direct welding, the most common method, flange connection, hot melt connection, electrofusion connection, thread connection and socket connection, etc. 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 bend, etc.
> Polyurethane insulated steel pipe working steel pipe: According to the technical requirements of the transmission medium, seamed steel pipes, seamless steel pipes and double-sided submerged arc spiral welded steel pipes are used.
> Polyurethane insulated steel pipe insulation layer: made of rigid polyurethane foam.
> Polyurethane insulated steel pipe protective shell: made of high-density polyethylene or fiberglass.
> Polyurethane insulated steel pipe leakage alarm line: When manufacturing high-temperature prefabricated direct-buried insulated pipes, an alarm line is buried in the insulation layer close to the steel pipe. Once a leak occurs somewhere in the pipe, through the conduction of the alarm line, It can alarm and display the exact location and extent of leakage on a special detection instrument, so that maintenance personnel can be notified to deal with the leaking pipe section quickly and ensure the safe operation of the heating network.
> Polyurethane direct-buried insulation pipe, also known as pipe-in-pipe, is composed of a two-step method and is composed of high-density polyethylene outer protective layer, polyurethane rigid foam plastic pipe and steel pipe.
> The insulation layer material is rigid polyurethane foam with a density of / to /, which fully fills the gap between the steel pipe and the casing, and has a certain bonding strength, so that the outer casing of the steel pipe and the insulation layer can form a solid whole. Polyurethane direct-buried insulation pipe foam has good mechanical properties and thermal insulation properties. It can usually withstand temperatures of ℃ through modification or combination with other insulation materials.
> Anti-corrosion layer: protects the outer steel pipe to prevent corrosives from corroding the steel pipe and prolongs the service life of the steel pipe.
> Outer protection steel pipe: protects the insulation layer from groundwater erosion, supports the working pipe and can withstand certain external loads, ensuring the normal operation of the working pipe.
> Polyurethane foam layer: ensures the temperature of the medium and ensures that the surface of the outer protective tube remains at normal temperature.
> Barrier reflective layer: Ensure that organic foam materials do not enter the inorganic hard high-temperature-resistant layer and reflect part of the heat from the high-temperature-resistant layer.
> Inorganic hard insulation layer: resistant to high temperatures, ensuring the interface temperature with the organic insulation layer and ensuring that the foam is not carbonized.
> Drag reduction layer: ensures that the working steel pipe can move freely when it expands due to thermal expansion or contraction.