When the project demands consistency humans can't deliver
On a lay-barge laying 5 km of large-diameter offshore pipe per day, the bottleneck is almost always field-joint coating. A human applicator can do excellent work on one joint, very good work on the next, then start to fatigue. Multiply that across 1000 joints and the variance compounds. For projects where every joint has to be identical to the spec, we deploy robotic field joint coating stations.
What a robotic FJC station does
- Automated surface preparation — robotic blast head circumnavigates the joint at programmed pressure and feed rate
- Pre-heat with closed-loop temperature control — induction coil maintains target temperature within ±5 °C
- Coating application — pre-set flow rate and pattern, identical for every joint
- In-line inspection — DFT mapping and holiday detection performed before the robot disengages
- Data logging — every joint gets a unique QC record with all process parameters captured
Where robotic FJC pays off
- Offshore lay-barge installations — high throughput required, weather windows are tight
- Large-diameter onshore trunklines — typically 36" and above, where manual application takes 40+ minutes per joint
- Critical sour-service or HP/HT pipelines — where joint-to-joint consistency directly affects line integrity
- Strategic export pipelines — where the operator demands documented process control for every weld
- Export-grade water transmission for desalination plants where AWWA + NSF compliance matters
What we offer
Equipment-and-operator package. Our FJC robot, induction heaters, blast kit and material come with two trained operators per shift.
Process qualification. Pre-project trials to qualify the system to your project specification (DNV-RP-F102, ISO 21809-3, client-specific).
Reporting. Every joint logged with timestamp, pre-heat profile, DFT map, holiday detection result. CSV/PDF export.
Backup capability. Manual applicators available on standby for joints where robotic access is impossible (tie-ins, complex geometry).
Standards
- ISO 21809-3 — field-joint coatings, robotic application qualifications
- DNV-RP-F102 — pipeline field-joint coating qualification
- NACE SP0490 — heat-shrinkable sleeves on pipelines
- API RP 5L1 — line pipe transportation
Frequently asked
Smallest pipe diameter you can do? Robotic stations are most economical from 12" upward. Below that, manual application is faster and cheaper.
How fast vs manual? On 24" and above: 30-40% faster cycle times, with much lower variance. The real win is consistency, not raw speed.
Can you provide the robot for our own crew to operate? We supply equipment-and-operator only — the operators are trained on our systems and qualified to client specs. Equipment-only rental can be arranged subject to insurance and qualification requirements.
