WHAT WE PROVIDE
We Provide Best Quality
Danholsen Global Services Limited (DGSL) is a Ddistinguished long established and highly respected Nigerian company in the Oil and Gas Industry. DGSL was established in March 29, 2004 to offer Professional Services in the oil and gas sector. DGSL through its high profile management team is poised to set a standard in its services equal to none in Nigeria and it's environs.
- We provide conventional and advanced NDT services for welds, pipelines, vessels, tanks, and critical assets to support safe operation and defect detection.
- We deliver fabrication, welding, structural repair, coating, and maintenance services tailored to offshore, onshore, and plant environments.
- We support the energy sector with pipeline integrity services, tank calibration, technical manpower supply and specialized field support, ensuring safety, and compliance.
WHAT WE PROVIDE
Our Services
Non Destructive Testing
Conventional and advanced NDT services for welds, pipelines, tanks, vessels, and critical assets.
Plant & Pipeline Inspection
Integrity-focused inspection, monitoring, and maintenance planning for plant and pipeline systems.
Welding Inspection
Independent welding quality surveillance, WPS/PQR support, and welder qualification oversight.
Fabrication & Maintenance
Structural fabrication, piping works, repairs, and planned maintenance for onshore and offshore assets.
Calibration Services
API and ISO-aligned tank calibration with precise volumetric table development and reporting.
Borehole & Water Treatment
End-to-end borehole drilling and treatment systems for safe, reliable, and sustainable water supply.
Tank Cleaning & Calibration
Integrated cleaning and calibration for storage tanks to restore performance and measurement accuracy.
Tank Integrity Test
Comprehensive integrity testing to detect defects early and sustain safe tank operations.
Equipment Sales & Leasing
Sales, leasing, load testing, and certification support for lifting and industrial equipment.
Technical Manpower Supply
Deployment of certified technical personnel for inspection, maintenance, and project execution.
Technical Training & Certification
Industry-aligned technical training and certification programs with practical competency focus.
Desanding & Steam Cleaning Services
Specialized desanding and steam cleaning for pipelines, tanks, and process equipment.
OUR PROCESS
Built for Uptime
Source &
Verify Materials
We procure certified steel, piping, and consumables from approved vendors, then validate MTCs, heat numbers, and dimensional compliance before fabrication starts.
Engineer the Execution Plan
Our team develops WPS-backed fabrication plans, inspection and test plans, and resource schedules aligned to client specs, HSE controls, and delivery milestones.
Fabricate, Test & Handover
We execute fit-up, welding, NDT, hydrotesting, and coating with full QA documentation so every spool, skid, and structural component is installation-ready at handover.
PORTFOLIO
Recent Work History
TESTIMONIAL
What Our Clients Say
WE ARE GLOBAL
Trusted by Operators Across Regions
We support upstream, midstream, and marine clients with fabrication, maintenance, and integrity services delivered to international QA and HSE expectations. With rapid mobilisation from Port Harcourt and disciplined execution controls, we help keep critical assets online and compliant.
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TRUSTED BY
Our Global 10+ Clients
FAQ
Do You Have Any Questions?
How do you assure fabrication quality before handover?
Every package follows an approved ITP with hold points for dimensional checks, visual inspection, NDT, and test witness. We only release scopes after complete QA dossiers and client sign-off.
Can you execute emergency maintenance during live operations?
Yes. We mobilise emergency teams quickly with pre-planned method statements, risk controls, and permit-to-work alignment to restore integrity while minimising production downtime.
Which codes and standards do your teams work to?
Our execution aligns with client specifications and applicable industry standards, supported by qualified weld procedures, certified inspectors, and coating control practices including DFT and holiday testing.
Do you support long-term maintenance frameworks?
Absolutely. We provide recurring maintenance programs with planned inspection cycles, KPI reporting, and dedicated engineering support to improve reliability over the full asset lifecycle.