Reducer

Penetrant Testing:

Penetrant solution is applied to pipe fittings or flanges cleaned surfaces.The liquid is pulled into cracks or defects by capillary action.Excess penetrant material is carefully cleaned from the surface.A developer is applied to pull the trapped penetrant material back to the surface where it is spread out and shows an indication.This indication is much easier to find than the crack or defect.

Magnetic Particle Testing

A magnetic field is established in a pipe fitting made from ferromagnetic material.The magnetic lines of force travel through,exit and reenter the material at the poles.Defects such as crack or voids cannot support as much flux,and force some of the flux outside of the part.Magnetic particles distributed over this pipe fitting will be attracted to areas of flux leakage and shows a visible indication.

Ultrasonic Testing

When the quality checker use a transducer to send the high frequency sound waves to a pipe fitting or flange.The waves travel through the product and are received by the same transducer or another one.The amount of energy transmitted or received and the time of the energy is received are analyzed to determine the presence of flaws.Changes in material thickness and properties could be measured too.

Eddy Current Testing

The Eddy current testing is used a lot as the NDT method for seamless steel pipes.Alternating electrical current is passed through a steel pipe producing a magnetic field.When the pipe is placed closed to a conductive material,the changing magnetic field induces current flow in the pipe.These currents travel in closed loops and are called eddy currents.Eddy currents produce their own magnetic field that can be measured and used to find flaws.

Radiographic Testing

Our QC team use RT to check the quality of welded seam.They put the radiation source and detector on the two sides of the seam,and use X-ray to produce images of welded seam from film or other detector that is sensitive to radiation.The thickness and density of the welded seam that X-rays must penetrate affects the amount of radiation reaching the detector.This variation in radiation produces an image on the detector that often shows internal features of the test seam.