Insulated pipes are ideal for transporting water, steam and other technical fluids. The high tensile strength and internal pressure of the insulated pipes make them ideal even for high pressure steam and water systems.
The pre-insulated pipe consists of a steel pipe which is encased in a casing (made of high density solid polyethylene (PEHD)). The outer wall of the steel tube and the inner wall cavity of the polyethylene casing are filled with a heat-insulating layer (made of rigid polyurethane foam (PUR)).
The expansion or contraction of the steel pipe due to the change in temperature is transmitted through the insulation to the outer casing, causing the outer casing to shift relative to the ground. Displacements are prevented by friction between the outer casing and the surrounding soil. This means that the displacement of an underground directly buried pipe system will be less than that of a free-expanding pipe system. Friction on the outer casings causes axial stresses in the system. The ability to suppress these stresses is a key factor when using a heat insulating pipe system.
We can offer insulated pipes of different lengths and sizes:
- Parameters: from DN20 to DN900, but we can deliver insulated pipes of the required size at the customer’s request;
- Lengths: 6 m and 12 m, but we can supply insulated pipes of the required length.
Insulated pipes meet the following quality standards: PN-EN 253; PN-EN-448; PN-EN 488; PN-EN-489; PN – EN 13941; PN-EN 14419.
The life of insulated pipes is 30 years.
The maximum operating temperature is 135 ºC.
- To UV sunlight;
- Aggressive substances;