Trusted calibration, NDT & inspection experts — based in Oman.
Gulf Calibration & Safety Inspection Services (GCS) is Oman’s reliable partner for ISO 17025-aligned calibration, certified NDT, independent third-party inspection, pressure-vessel & welding QC and accredited HSE safety training — headquartered in Muscat with a Duqm branch.
Built to safeguard people, assets & uptime.
Founded to serve Oman’s growing oil & gas, construction and manufacturing sectors, GCS combines deep technical expertise with a partner-first culture.
- Headquartered in Muscat · branch office in Duqm
- Certified Level II / III NDT technicians on staff
- Calibration aligned with ISO/IEC 17025
- HSE programmes aligned with Omani & international standards
Accuracy. Independence. Accountability.
Every certificate we issue carries our reputation. That’s why we invest in trained people, calibrated reference standards and a quality system you can audit any day of the week.
- Traceable measurements · auditable records
- Independent third-party reporting — no conflicts of interest
- Transparent pricing · on-time delivery
- Single point of contact for every account
Our values — the foundation of every job.
Want to meet the people behind every certificate? Meet the GCS team
Precision
Every measurement is traceable to international standards. No shortcuts, no estimates.
Safety First
We protect lives. Our HSE culture is non-negotiable on every job site we touch.
Independence
As an independent third party, our certificates carry weight with EPC contractors and operators.
Partnership
We’re an extension of your team. One contact, fast response, accountable delivery.
Six accreditations — all current, all auditable.
Every claim we make is backed by a third-party accreditation or membership your team can verify.
LEEA Full Member
Lifting Equipment Engineers Association
Quality Management
ISO 9001:2015
Environmental
ISO 14001:2015
Occupational H&S
ISO 45001:2018
Inspection Body
ISO/IEC 17020
Testing & Calibration
ISO/IEC 17025
Seven locations across Oman.
Our crews mobilise from the city closest to your project — from Muscat to Salalah, Sohar to Sur.