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best technique depend on type of weld and requirement.Liquid penetrant test is best to simple operation but it is only detect surface defect.radiographic test is best to for detect all defect means inner side defect,also we record it
liquid penetrant for surface and radiography for inner defecs
Best technique selecting on case to case
Radiography testing is best for volumetric defects,LPT is good for surface defects
ULTRASONIC TESTING IS BEST METHOD FOLLOWS RADIOGRAPHY,MAGNETIC PARTICLE AND LIQUID PENETRAT TESTING
Best Technique for NDT is Radiography which we can detect both surface and subsurface defects which is also recordable.
Simple Advanced NDT methods available like PAUT,TOFD which far better than Conventional NDT Methods
LIQUID PENETRANT TEST,RADIOGRAPHIC TEST AND ULTRA SONIC TEST
THE MOST BEST TESTING RADIOGRAPHY AND LIQUID PENETRATION TEST
LIQUID PENETRATION TEST FOR SURFACE DEFECTS AND UT & RT FOR INNER DEFECTS
The best technique depend on type of welding and requirement, but the best with me is UT due to can detect Sub surface and lack of side wall fusion then follow RT
