As a leading provider of eddy current testing (ECT) solutions, we understand the critical importance of quality assurance in seamless steel pipes. Surface defects such as scratches, cracks, folds, laps, transverse cracks, and non-metallic inclusions, as well as internal issues like delamination and inclusions, can significantly impact product performance and safety.
Eddy current testing has become a widely recognized, efficient, and non-destructive method for inspecting conductive materials, especially steel pipes and rods. This technique is suitable for both ferromagnetic and non-ferromagnetic materials with diameters above 2mm and wall thicknesses greater than 0.1mm. ECT enables rapid, comprehensive inspection of the entire pipe surface, making it ideal for both online and offline automated testing environments.
The principle is straightforward: when a conductor is exposed to a changing magnetic field, induced eddy currents form closed loops within the material. These currents generate secondary magnetic fields, altering the impedance of the detection coil. By monitoring these changes, we can accurately identify physical or process-related defects without damaging the test piece.
Key Advantages for Pipe Inspection:
High-speed precision: Scans entire surfaces at production-line speeds without contact or couplants, ideal for pipes >2mm diameter and ≥0.1mm wall thickness .
Depth-sensitive: Identifies surface/near-surface flaws (e.g., 0.1–0.2mm micro-folds ) and quantifies crack severity .
Multi-parameter insight: Simultaneously evaluates dimensional consistency and material properties (conductivity/permeability), critical for post-heat-treatment QA .
For industries where safety is a top priority, such as oil and gas and power generation, eddy current testing (ECT) serves as a proactive safeguard against catastrophic failures.
Drive excellence with intelligent detection.
[SuZhou Desisen electronics co.,ltd.] – Precision Eddy Current Solutions for Industrial Integrity