DN Steel Jacketed Insulated Pipe

The DN steel jacketed insulated pipe consists of the steel pipe used to transport medium, anticorrosive steel tube, and the superfine glass wool filling between the inner steel pipe and the outer steel tube.

The most important feature of the protection tube for directly buried pipeline is reliable waterproofness. Also, the protection tube should possess good mechanical strength. The steel protection tube has high strength and highly reliable waterproofness. In addition, its high temperature resistance is incomparable by other outer protection tubes.

Composition
Our directly buried steel jacketed insulated pipe comprises the following parts.
1. Anticorrosive coating
This coating protects the outer steel tube from corrosion to prolong its working life.

2. Outer protective steel tube
It provides protection for the thermal insulation layer from erosion of groundwater, supports the working steel pipe, and bears certain external load to guarantee that the working steel pipe can work normally.

3. Polyurethane foam layer
It can ensure the temperature of the transported medium and that the surface of the outer protective steel tube keeps normal temperature.

4. Barrier and reflective layer
The barrier prevents the organic foam material entering the inorganic rigid high temperature resistant layer, and the reflective layer reflects partial heat of the high temperature resistant layer.

5. Inorganic rigid thermal insulation layer
It can resist high temperature, keep the interface temperature with the organic thermal insulating layer, and ensure the polyurethane foam does not be carbonized.

6. Drag reduction layer
Its function is to make sure that the working steel pipe can move freely during thermal expansion and contraction.

7. Working steel pipe
It ensures the normal flow of the medium to be transported.

Related Names
Steel Casing Pipe | Steel-in-Steel Pipe | Steam Pipe Insulation