Visual and dimensional inspection can detect deviations in the shape of parts and products, as well as material and surface finish defects.

Ultrasonic testing detects discontinuities in metal integrity and identifies various defects located on the external and internal surfaces, as well as within the wall thickness.

Magnetic particle inspection of products detects surface and subsurface defects such as material discontinuities: cracks of various origins (grinding, forging, stamping, quenching, fatigue, deformation, pickling, etc.), flakes, laps, tears, seams, delaminations arising both during operation and on newly manufactured products.

Liquid penetrant testing is performed to identify surface discontinuities: cracks, pores, slag inclusions, cavities, intergranular corrosion, stress corrosion cracking, and other discontinuities, as well as their location, extent, and propagation pattern. This method detects defects of any geometry, whether of manufacturing/technological or operational origin.

Electromagnetic inspection (EMI) – used for inspecting drill pipes to detect corrosion damage, mechanical damage, wall thinning, and internal material structure defects. The method provides full 360° circumferential scanning of the surface and detects transverse, longitudinal, and through-wall defects (notches, cuts, cracks, delaminations), wall loss on the external surface (abrasive wear, corrosion), as well as on the internal surface (erosive wear, internal corrosion), plus fatigue microcracks, pitting corrosion, and structural changes within the material thickness. With a sensitivity of ±0.5 mm, the method reveals defects hidden from visual and conventional inspection, making electromagnetic inspection indispensable for assessing the remaining service life of drill tools and determining their suitability for further operation.

Acoustic emission testing – used to detect developing defects and microcracks in parts, assemblies, and components of oil and gas equipment by recording elastic waves (acoustic signals) generated in the material during plastic deformation and defect propagation. This method detects microcracks, quench cracks, seams, delaminations, and other defects at an early stage of development, long before they become visible or critical, providing real‑time equipment monitoring even under high‑pressure operation. Acoustic emission testing is especially valuable for diagnosing hidden defects within the material thickness that arise from manufacturing/technological processes or prolonged equipment operation in extreme well conditions, thereby preventing catastrophic failures and ensuring operational safety.