Single Steel Pre-Insulated Pipes

Key Features

Carrier Pipe Dimension Temp Range Max Alarm System Operating Pressure Diffusion Barrier Series of Insulation Thickness
Steel  DN20 to DN1200 0°C to 150°C  Yes 25 bar  No  1, 2 & 3

Description of Traditional Single Steel

Vital Energi Traditional steel pre-insulated pipes are suitable for district heating and district cooling applications. They are constructed of a carbon steel service pipe, polyurethane (PUR) foam insulation and High Density Polyethylene (HDPE) outercasing. The traditional single steel pipe system is a bonded system manufactured according to BS EN253, this means the steel carrier pipe, insulation and outer casing are moulded together to form a solid unit. Thus, the expansion movements of the steel carrier pipe will be transferred to the outer casing via the foam insulation.

Vital Energi Traditional steel pre-insulated pipes are available in three insulation thicknesses Series 1, 2 and 3 and are manufactured in 6m and 12m and 16m lengths as standard. The pipes are supplied with two copper wires embedded in the polyurethane (PUR) insulation; these wires are used to identify any leaks in the system.

The polyurethane (PUR) insulation has a guaranteed lambda value of 0.027 W/mK.
Vital Energi Traditional steel pre-insulated pipes are available in carrier pipe sizes from O/D 26.9mm to 1219mm.


Applications of Traditional Single Steel

  • Low Temperature Hot Water (LTHW)
  • Medium Temperature Hot Water (MTHW)
  • Cooling 
  • Steam
  • Condensate


The general advantages of Traditional Steel Pipe systems are:

  • Reduction in the number of joints needed through the availability of long lengths
  • Reduction in the number of bends/fittings needed as the piping can be factory curved to follow the best and easiest path
  • Fully welded system
  • Alarm System
  • No-dig methods (or boring) can be applied