1 — Inserting the Liner
Winch-pull installation of the flexible liner through small access pits at each end of the host pipe.
Primus Line — Trenchless Pipeline Rehabilitation
Innovative trenchless rehabilitation of pressure pipelines carrying oil, water, and gas. Aramid-reinforced flexible high-pressure liner with patented connector technology — in worldwide service since 2001.
Germany Worldwide service since 2001Aramid ReinforcedPatented ConnectorOverview
Primus Line — Trenchless Pipeline Rehabilitation
Primus Line is a unique trenchless rehabilitation system for pressure pipelines. A flexible high-pressure aramid-reinforced liner is inserted into the host pipe through small excavation pits, inflated, and terminated with patented Primus Connectors — delivering structurally independent pressure capacity inside the existing pipe envelope.
In worldwide service since 2001 (Primus Line GmbH, Germany), the system has been installed in oil, water, and gas pipelines for utilities, terminals, and refineries. JST is the authorised installer in Southeast Asia, including the recent JO Terminal install at Songkhla (2024).
Installation typically takes one to three days per shot and avoids open-cut excavation — critical in built-up areas, environmentally sensitive sites, or live operating facilities.
How It Works
Installation & System Construction
A four-step trenchless install — inserting, inflating, terminating, and commissioning.
2 — Inflating the Liner
Pressurised inflation forms a structurally independent inner pipeline inside the host.
3 — Installing the Connectors
Patented Primus Connectors terminate the liner to the host pipe without welding.
Liner Construction
Abrasion-resistant PE outer sheath, aramid fibre reinforcement, and PE / TPU / PE-RT inner layer.
Featured Projects
Field-Proven Across Southeast Asia
Primus Line
JO Terminal, Songkhla (2024)
Trenchless rehabilitation of pressure pipeline at JO Terminal, Songkhla — installed 2024, including liner pull, inflation, connector termination, and commissioning.
Related Services
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