CS-2 series ultrasonic contrast test block non-destructive testing calibration test block NB/T47013-2015 standard

CS-2 series ultrasonic test block, the test block is designed according to the standard requirements for ultrasonic testing of carbon steel and low alloy steel forgings for pressure equipment. It is suitable for single crystal straight probe to detect carbon steel and low alloy steel forgings and The straight probe axially detects bolt blanks with diameters greater than or equal to M36 carbon steel and low alloy steel.