Application / Rotational testing


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About Rotational testing

  • Products tested: All seamless products that are round or off-round
  • Production types: Straightening lines, continuous drawing lines, offline final inspection
  • Inspection: Integrated into production line or used in final offline inspection
  • Materials tested: Ferrous, austenitic, nonferrous metals
  • Test piece diameter: 2???130 mm (0.08???5.12 in)
PRÜFTECHNIK's rotating systems are designed specifically to identify longitudinal, homogenous cracks and fissures found at the surface of the test piece. They are used for products that have a tendency to show longitudinal defects but do not have seam welds. Because the encircling coil is ideal for finding short transverse defects, it is often used in conjunction with the rotating system for a comprehensive testing strategy. PR??FTECHNIK offers a series of rotating systems (RS35HSRS65RS130) to cover a wide range of tube diameters. They are particularly easy to operate and maintain and are extremely robust to withstand the industrial environment. Precise test piece guidance and a lift-off compensation system ensure accurate test results.
Eddy current inspection equipment suited for use with the rotating system includes the EDDYCHEK S and the EDDYCHEK 5, depending on the testing capabilities required. 

Reated Projects

Black and bright bar

  • Offline inspection: For final quality check after straightening, peeling or polishing using conveyor system
  • Continuous drawing lines: Inline inspection of bars, Ø up to

Double-wall brazed tubing

  • Detects critical defects: Finds typical processing defects such as flaws in the inner and outer seam, copper spots and runs
  • Inline inspection: Immediate test results and feed

Hot rolled ferritic rod

  • Quality control: Detection of defective areas in test material and assignment of test piece to a quality category 
  • Process control: Identification of defective rolling element

Rotational testing

  • Products tested: All seamless products that are round or off-round
  • Production types: Straightening lines, continuous drawing lines, offline final inspection
  • Inspectio