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Magnetic Flux Leakage (MFL) technology plays an indispensable role as the foundation for ensuring the safe operation of pipelines.

Southwest Oil and Gas Field has achieved multiple important results in pipeline magnetic leakage internal detection through independent innovation and technological breakthroughs, which not only improves the technical level of domestic oil and gas field enterprises, but also sets an example for the global industry

The first proposal for international standards for magnetic flux leakage detection proposed by my country was successfully approved and received support from many countries including Italy, Brazil, Argentina and South Korea.

Magnetic leakage testing is used to detect the maintenance and management of pipelines, ensuring their safety and reliability.

The magnetic flux leakage detection method can effectively detect defects on the surface, near-surface and inside of ferromagnetic materials, and is low-cost and easy to implement automation, so it is widely used in steel pipe inspection.

The main detection principle of magnetic leakage detection method is to magnetize the workpiece (close to saturation) to give it a certain magnetic flux density, so as to generate a leakage magnetic field at discontinuous points. The magnetic field sensor sends the output signal to the operating amplifier.

Non destructive testing is a widely used method in pipeline inspection. It tests and inspects the quality and characteristics of materials without damaging the pipeline itself.

Magnetic flux leakage testing has the following advantages: it is easy to implement automation, has high detection reliability, and can achieve preliminary evaluation of defects with high efficiency and pollution-free characteristics.