to the standard of the most demanding sites
to the standard of the most demanding sites
EN ISO 3834 certified, our team of 36 specialists operates across Switzerland and France — pharma, energy, petrochemicals. Detailed quote within 48h.
Every hour of unplanned downtime costs tens of thousands. A job that overruns by three days is a production line that doesn't restart.
One untraceable weld or incomplete file found in a client or FDA audit, and an entire line goes back into qualification.
Welding, piping and HVAC split across three companies: three schedules, three managers, zero overall accountability.
Without an integrated partnerOne contractor per trade, coordination on your plate
With STELIONA single point of contact, accountable end to end
Without an integrated partnerWeeks of waiting, vague scopes
With STELIONA detailed technical quote within 48h
Without an integrated partnerScattered files, untraced welds
With STELIONA complete quality file handed over at acceptance
Without an integrated partnerOpaque progress, discovered in meetings
With STELIONA daily progress review throughout the job
Without an integrated partnerSlow mobilisation, window overrun
With STELIONTeams mobilised within 48h, schedule aligned with your shutdown
Total visibility, complete traceability, uncompromising execution.
Stelion OS is the tool our teams use every day: preparation, scheduling, weld traceability, inspections, invoicing. What it changes for you: a continuously documented job, and a complete file at acceptance.
Progress, schedule and teams tracked day by day, from quote to acceptance.
Materials, welds and NDT inspections recorded as the job progresses — nothing is reconstructed from memory.
A progress update shared with your teams throughout the intervention.
The complete as-built file, handed over at acceptance, ready for your audits.
Partial extension of an existing WFI circuit — replacement of 3 degraded sections and addition of a branch to a new filling station. IQ/OQ documentation provided.
Replacement of an ageing steam network section in a distribution substation. 85 m of piping, 64 TIG welds, completed during a 2-week shutdown.
Replacement of fittings and degraded sections on an existing production line. Planned 10-day shutdown, 38 m of 304L stainless piping, CIP validation.
Upgrade of the HVAC system in an existing ISO 7 clean room — replacement of the air handling unit and recalibration of the regulation. Validated OQ/PQ qualification.
Maintenance shutdown with replacement of 120 m of degraded pipelines. ATEX zone intervention, automatic welding, 100% NDT inspection.
Replacement of 2 end-of-life chillers and upgrade of the free-cooling system on an existing data centre. No service interruption, N+1 redundancy maintained.
Every project follows a clear, rigorous sequence. Our commitment: meet the deadlines, guarantee quality and document every step.
Analysis of your request and a detailed quote within 48 hours.
A dedicated project manager, from quote to acceptance.
Hour-by-hour scheduling and workshop prefabrication: the date is met.
A daily review with your teams: you always know where things stand.
Traceability, inspection reports and welding books handed over at acceptance.
This site only shows our teams and our job sites — never generated images, never actors.
Detailed quote within 48h. Call or write to us — an engineer will answer.
