ASME Sec V Non-Piping Calibration Blocks (DAC Block)

Used for establishment of primary reference responses for UT examination of welds. The standard blocks are available in thickness (T) 0.75” (19mm), 1.5” (38mm) and 3” (75mm) which contains three side-drilled holes of diameter 3/32” (2.5mm), 1/8” (3mm) and 3/16” (5mm) respectively.

The holes locations are at 0.25T, 0.5T and 0.75T and depth of each hole is 1.5“(38mm) Also contains two EDM notches measuring 2%T deep x 1/4" (6mm) max wide x 1.0" (25mm) long min. In accordance with ASME Sec V Art. 4 Fig. T-434.2.1. Dimensions: 3T x 6” (150mm) x T.