Technical data of pre-insulated district heating network components

1. Carrier pipe

The steel carrier pipe meets the requirements of PN-EN 253:
✓ seamless steel pipes – made of P235GH grade steel with a quality as per PN-EN 10216-1, PN-EN 10216-2
✓ longitudinally or spirally welded steel pipes – made of P235GH grade steel with a quality as per PN-EN 102017-1, PN-EN 102017-2, PN-EN 102017-5
✓ longitudinally welded galvanized steel pipes – made of P235GH or P235TR1, P235TR2 steel grade with a quality as per PN-EN 10217-1, PN-EN 10217-2 and PN-EN 10217-5, and a zinc coating with a quality as per PN-EN 10240

2. Casing jacket – PN-EN 253 casing pipes

3. Thermal insulation

✓ As per PN-EN253

4. Pre-insulated pipes

✓ Pre-insulated pipes in the range of diameters DN20 ÷ DN1000 with a steel carrier pipe (made in accordance with PN-EN 253)

5. Pre-insulated elements

Made in accordance with PN-EN 253 and PN-EN 448:
✓ Bends
✓ Reductions
✓ Perpendicular branches
✓ Parallel branches
✓Fixed points
✓ Bellows expansion joints

6. Pre-insulated fittings

Made in accordance with PN-EN 253, PN-EN 448, and PN-EN 488:
✓ Vents
✓ Drains
✓ Shut-off valves
✓ Shut-off vent valves
✓ Shut-off drain valves
✓ Shut-off drain-vent valves

7. Other pre-insulated network components

Components made in accordance with PN-EN 253, PN-EN 448, and PN-EN 489:
✓ PE casing pipes
✓ Adapters
✓ HDPE collar
✓ Heat-shrink joints
✓ Terminal joints
✓ Electrically welded joints
✓ Rubber sealing rings
✓ Expansion pads
✓ Heat-shrink tapes
✓ Heat-shrink terminal gaskets
✓ PUR foam

8. Alarm system components

The alarm systems comply with the requirements of the 14419 standard:
✓ Sensor conductors
✓ Return conductors
✓ Two-wire conductors
✓ Four-wire conductors
✓ Clamping ferrules
✓ Heat-shrink tubing
✓ Supports
✓ Connectors
✓ Junction boxes
✓ Metering boxes
✓ Metering equipment