Infra Technology

DH Pipe production lines

DH Pipe production lines

The threat of global warming has been recognised in several countries. The price of energy is rising and energy is also needed to cover the peaks in energy consumption. Under difficult circumstances, during the severest frost, heavily loaded pipes may even burst. Installing Uponor district heating pipes minimizes heat loss along the pipeline

Production technology for PU insulated pipes

Uponor Infra Technology is the only company on the market who can deliver a complete production line for district heating pipe manufacturing. Uponor Infra has delivered DH-pipe production lines all over the world since 1986, for example only to Russia we have delivered 8 factory lines.

Standard range of the carrier pipe is up to 1000 mm, bigger sizes upon request. The extruder line for PE jacket pipes can also be used for manufacturing water-, sewage- and gas pipes.

The standard production line includes extruder line for jacket pipes, foaming lines for straight pipes and fittings and welding equipment for jacket pipes. Cooling water system for the extruder and quality control equipment are also included to delivery as well as project planning, layout with customer's requirements and supervision of installation and startup.

The customer's personnel are trained in the production process at a Uponot Infra plant in Vaasa, Finland

Production technology for PU insulated pipes

Continuous Steel Pipe Insulation Process

Uponor Infra delivers continuous high capacity foaming production lines for rigid DH-pipes. The range of manufactured jacket pipes in nominal factory is OD 110 - 500 mm. The line includes automatic pipe feed-in and separation system, laminator, foaming machine with double mixing head and cross head extrusion for jacket pipes.n system, laminator, foaming machine with double mixing head and cross head extrusion for jacket pipes.

Quality control equipment

  • Testing of melt flow rate
  • Wall thickness measuring during production
  • Tensile testing
  • Pressure testing of pipes
  • Testing of density
  • Testing of shrinkage
  • Testing of ringstiffness
  • Thermal stability
  • Tightness testing
  • Impact testing
  • Measuring tools
Quality control equipment