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Main Services / Non Destructive Testing

CTI Inspection provides TÜRKAK-accredited Non-Destructive Testing (NDT) services for industrial facilities, structural steel fabrications, pipelines, and pressure vessels, in compliance with international standards (EN, ISO, ASME). With our team of expert engineers—certified at Level II and Level III—we perform defect detection with the highest level of precision, without compromising the structure or integrity of the material.

Non-Destructive Testing Methods Within Our Scope

UT – Ultrasonic Testing

What is ultrasonic testing (UT)?

High-frequency sound waves are used to detect defects in weld seams and to measure material thickness.

MT – Magnetic Particle Testing

Detection of surface and near-surface fine cracks, laminations, and fusion defects in ferromagnetic materials.

VT – Visual Testing

The first and most critical step in all NDT processes; involves macroscopic surface inspection, assessment of weld seam profiles, and checks for geometric conformity.

PT – Liquid Penetrant Testing

Detection of surface-breaking discontinuities in all non-porous metallic and non-metallic materials using colored penetrant liquids.



Frequently Asked Questions (FAQ)

What is Non-Destructive Testing (NDT)?


Non-Destructive Testing (NDT) is the general term for quality control and discontinuity detection methods performed on a material or component without compromising its intended utility or damaging its physical integrity.

What is Ultrasonic Testing (UT) and where is it used?


Ultrasonic Testing (UT) is an NDT method that uses high-frequency sound waves transmitted into a material to detect internal defects, porosity, and weld flaws. It is widely used in castings, forgings, welded fabrications, and pipelines.

To Which Materials Can MT (Magnetic Particle Testing) Be Applied?


Magnetic Particle Testing (MT) is applied exclusively to ferromagnetic (magnetizable) materials, such as steel and iron-based alloys. It enables the rapid and precise detection of hairline cracks, laminations, and fusion defects located on or just below the surface of the material.

What Is PT (Liquid Penetrant Testing) and Where Is It Used?


Answer: Liquid Penetrant Testing (PT) is a method used for all non-porous materials—including both metallic (such as austenitic stainless steels, aluminum, etc.) and non-metallic materials—to reveal surface-breaking cracks and discontinuities by using colored penetrant liquids. It is the most effective method for non-magnetic surfaces where MT cannot be applied.

Is VT (Visual Testing) Sufficient on Its Own?


Answer: Visual Testing (VT) serves as the initial and most fundamental step in any non-destructive testing (NDT) process. It is used to identify weld bead profiles, surface porosity, and geometric irregularities. However, to detect deep-seated internal defects, additional methods such as UT (Ultrasonic Testing) or RT (Radiographic Testing) must be employed alongside VT.

Do NDT Reports from CTI Inspection Have International Validity?


Answer: Yes. CTI Inspection is a Type A Inspection Body accredited under TÜRKAK ISO 17020. Our NDT specialists hold Level II and Level III certifications in accordance with EN ISO 9712 standards. All prepared inspection reports have official validity at an international level.

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