StandardsDIN 16961EN 1610DVS 2207
Technical support from trench to test.
From installation supervision to pipeline welding and maintenance, PolyGrande supports correct installation and documented performance.
The full scope, start to finish.
PolyGrande engineers and trained crews help contractors manage handling, bedding, jointing, backfilling, testing, and maintenance for large-diameter HDPE pipeline systems.
Site supervision
Trench geometry, bedding, jointing, backfill, and deflection monitoring oversight.
Pipeline installation
Pipe laying, jointing, and initial backfill support coordinated with the main contractor.
Pipeline welding
Butt fusion and extrusion welding for critical connections and fabricated assemblies.
Pipeline maintenance
Inspection, repair, acceptance testing, and post-installation support.
Tested before handover.
Installed pipelines can be tested and documented before completion, giving contractors and consultants a clearer handover package.
- Water pressure test: 0.5 bar, 30 minutes
- Air pressure test: 0.2 bar per EN 1610
- Deflection check: up to 3% of internal diameter
- Signed test certificates
Need site support?
Share the installation scope, site location, and testing requirements.