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BEST-IN-CLASS

DISTRICT HEATING
EXPANSION JOINTS

District heating pipelines are mainly exposed to temperature expansions caused by temperature fluctuations as a result of a system start-up or predisposed operating conditions. Depending on the purpose District Heating Expansion Joints can be divided into two main categories:

  • District Heating Expansion Joints for multiple usage
  • One-step Expansion Joints

Both types are specifically developed for district heating applications and are suitable for ground-surface and underground pipeline systems. Belman offers standard as well as customised solutions.

Design range and scope of supply within District Heating Expansion Joints

District Heating Expansion Joints are available in sizes DN 80 – 1200 in all materials.
Other sizes and designs are designed and manufactured as cost-efficient customised solutions based on customer specifications and drawings.

Dimensions

DIMENSIONS:
DN 15-1200
Up to DN 12000 on request.

Pressure

PRESSURE:
Up to 25 Barg / 362 psi
Up to 150 barg on request.

Temperature

TEMPERATURE:
-40°C to +200°C
Higher and lower temperatures
on request.

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MATERIALS:

Austenitic stainless steels, High alloys, Duplex, Titanium, Hastelloy,
Incoloy, Inconel, Alloy 59

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DESIGN CODES:

EN 13445, EN 13480, EN 14917
ASME VIII, div.I, ASME B31.3
ASME B31.1, EJMA, AD 2000
and others on request

Test and Quality Control

TESTS:

Radiographic examination (X-ray), Helium leak testing, Pressure test,  Air test, Dye penetrant test,  Magnetic particle examination and many more