Application / Compound tubing


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About Compound tubing

  • Inspection: Identification of weld seam defects in the internal metal layer of compound tubing
  • Diameter: 10-60 mm (0.4-2.4 in)
To guarantee a defect-free compound tube, the intermediate metal layer of aluminum or stainless steel is inspected for holes or cracks. Usually, the weld seam of the internal tube presents a weak spot and is tested using a segment coilbefore the outer plastic layer is extruded over the metal. The eddy current signals are transmitted to the eddy current inspection equipment that evaluates it, identifies defects, marks the damaged areas and documents the results for future reference.

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

Offline testing

  • Offline inspection: Final inspection of cut-to-length tubes, e.g. after drawing to precise diameter (precision tubes)
  • Conveyors: PR??FTECHNIK also provides conveyor systems f

Sensitive bar testing

Application fields

  • Production type: very high quality bars and seamless tubes
  • Materials: round black or bright steel (ferromagnetic); rolled, straightened or sand blasted
  • Diamet

Continuous drawing line

  • Input control: Identification of bad quality rolled wire (drawing lines for thick wire)
  • Process control: Monitoring of production lines to avoid scrap (medium and fine drawing blocks)<