Seamless steel pipe detection

Seamless steel pipe detection is mainly shown below:

Size and shape detection

Checking the contents include: wall thickness, diameter, length, bend, ovality, ports and blunt edge slope angle and profiled steel cross-sectional shape.

Chemical performance testing

At room temperature or under a certain temperature mechanical properties test (tensile test, toughness test, hardness test), hydraulic test and corrosion test (intergranular corrosion test, resistance to hydrogen cracking experiment-HIC, sulfide stress cracking test-SSCC).

Surface quality inspection

Human visual inspection and NDT inspection. There are many non-destructive testing methods such as: ultrasonic testing, eddy current testing, magnetic particle testing, magnetic flux leakage detection, electromagnetic ultrasonic testing and penetration testing, etc. Each method has advantages and disadvantages: suitable for detecting steel surface or near-surface: eddy current testing, magnetic particle testing, magnetic flux leakage testing, penetration testing. Where penetration testing is limited to the steel surface defect inspection openings. Magnetic particle testing, magnetic flux leakage testing, eddy current testing of ferromagnetic materials only limited checks. Eddy current testing is more sensitive to the point-like defects, other crack detection sensitivity. And ultrasonic flaw detection reaction on the surface of the pipe relatively rapid, qualitative analysis of the internal pipe there are still some difficulties, and ultrasound is also limited by the shape of steel and grain size.