NDT & Heat Treatment Services

🔍 Expert Testing. Trusted Results. Total Integrity.

At Servog, we deliver reliable Non-Destructive Testing (NDT) and Post Weld Heat Treatment (PWHT) services to ensure the structural integrity, safety, and compliance of your critical assets. Serving oil & gas, petrochemical, construction, power generation, and marine industries, our certified technicians are equipped to perform field and in-house services across Nigeria and beyond.

Non-Destructive Testing (NDT) Services

We offer a comprehensive range of ASNT / ISO-certified NDT methods that detect surface and subsurface flaws without damaging your components or halting operations.

✅ Our NDT Capabilities Include:

  • Ultrasonic Testing (UT) – Detects internal flaws and wall thickness loss.
  • Radiographic Testing (RT) – X-ray/Gamma-ray inspection of welds and castings.
  • Magnetic Particle Inspection (MPI/MPT) – Surface/subsurface flaw detection on ferromagnetic materials.
  • Dye Penetrant Testing (DPT/PT) – Crack detection on non-porous surfaces.
  • Visual Inspection (VT) – Certified inspectors for welding, coating, and structural audits.
  • Hardness Testing & PMI – Material verification and mechanical property checks.

🛠 Standards we follow: ASME, API, ISO, AWS, BS EN

♨️ Post Weld Heat Treatment (PWHT)

Stress relieving done right.

Our PWHT services help reduce residual stress and improve metallurgical properties after welding, ensuring longer life and compliance with codes.

🔥 Our Heating Services Include:

  • Local PWHT (Resistive Pads, Ceramic Blankets) – For pipe joints, nozzles, flanges
  • Furnace Heat Treatment – For large components and spools
  • Preheating Services – To avoid cracking during welding
  • Temperature Monitoring & Charting – Real-time data logging for quality control

🎯 PWHT Compliance: ASME B31.1, B31.3, API 650, API 1104, AWS D1.1

🧑‍🔬 Why Choose Servog?

  • ✅ Certified Technicians (ASNT Level II/III, API Inspectors)
  • 🧰 Modern NDT Tools & Digital Equipment
  • 🔐 Full Quality Documentation & Traceability
  • ⏱ 24/7 Field Support & Quick Mobilization
  • 🌍 Serving Clients Across Nigeria & West Africa

📷 Recent Projects

  • Pipeline girth weld inspection for NLNG Buffer Gate Installation, RIVERS STATE. (SERVOG as sub-contractor to BCNL)
  • PWHT of pressure vessels for Larfarge Calabar
  • Tank floor inspection using MPI and UT in Larfarge, Calabar
  • Power Plant construction – Civil Works and Steel Erection