Catch defects at the arc, not at hand-over.
CWI-competent inspectors integrating with your fabrication or construction team from WPS / PQR review and welder qualification through hold-point witnessing, coating inspection and pre-shipment release.
Explore each discipline in depth.
Click through to the dedicated page for each equipment / discipline — complete with its own animated illustration, scope & standards.
Visual Weld
Most weld defects can be detected visually if you know what to look for. Our qualified CWI-competent inspect...
View pageWps Pqr Review
Before a single production weld is laid down, the procedure must be qualified and the weld...
View pageCoating Inspection
Protective coatings are only as good as their application. Our ISO 17020-aligned coating ...
View pagePre Shipment Inspection
Catching defects at the supplier’s factory is far cheaper than catching them on site...
View pageFrom WPS approval to final hold-point sign-off.
Every project follows the same five-stage workflow so welds are right the first time and your records pass any third-party audit.
WPS & PQR review
Procedures verified against ASME IX / AWS D1.1 / EN ISO 9606. Welder qualification (WPQ) records witnessed and stamped.
Pre-weld inspection
Material identification, fit-up, edge prep, cleanliness, preheat and consumable verification before the arc strikes.
In-process surveillance
Parameter checks (current, voltage, travel speed, heat input), interpass temperature, visual on each pass, hold-point witnessing.
Post-weld VT & NDT
Visual inspection to ISO 5817 acceptance, NDT coordination (PT/MT/UT/RT) and defect sentencing for repair.
Final report & release
Inspection & Test Plan signed off, traveller closed, welding data book compiled — ready for client / client-of-client audit.
Built for accuracy, independence & accountability.
Precision
Every measurement traceable to international standards.
Independence
Independent third-party reporting recognised by EPC majors.
Safety First
HSE-compliant operations on every job we touch.
Partnership
Single point of contact, fast response, accountable delivery.
Questions our clients ask most often.
What welding inspection services does GCS offer?
GCS provides visual weld inspection (VT) to AWS D1.1 / ASME IX / EN ISO 5817, WPS / PQR review, welder qualification (WPQ) witnessing, hold-point witnessing, vendor surveillance, pre-shipment inspection and macro-etch examination on test welds.
Are your welding inspectors qualified?
Yes. Our welding inspectors hold CWI-level competence and work to ISO 17020-aligned procedures. They are experienced in oil & gas, structural, pressure-equipment and pipeline welding across Oman's industrial sectors.
Do you perform coating and paint inspection?
Yes. Our coating inspectors verify surface preparation (Sa 2.5/3 blast profile, salt contamination, dust), climatic conditions (dew point, RH, surface temp), dry film thickness (DFT), holiday detection (low & high voltage) and adhesion testing per ISO 19840.
Can you witness factory acceptance tests (FAT) abroad?
Yes. We coordinate vendor surveillance and pre-shipment inspection at supplier facilities globally (typically India, China, Korea, Italy, UAE) for clients sourcing equipment for Oman projects. Reports include MTR review, ITP compliance and final dimensional verification.
What welding codes do you work to?
Primary codes: ASME Section IX, AWS D1.1 (structural), EN ISO 9606 (welder qualification), EN ISO 5817 (acceptance criteria), API 1104 (pipeline), and client-specific procedures. We also align with NORSOK and OGUK references for offshore work.