The Blocks with Side-Drilled Holes and Their Sensitivity Setting According to Technique 1 of GB/T 11345-2013

Blocks with side-drilled holes were designed according to technique 1 of the ultrasonic testing of welds in national standard GB/T 11345-2013, “NDT of welds-Ultrasonic testing-Techniques, testing levels, and assessment”, and GB/T 29712-2013, “NDT of welds-Ultrasonic testing-Acceptance levels”. The way how to use the side-drilled hole blocks to set sensitivity and make DAC was introduced.