Products

ASME Type Phased Array Pipe Calibration Block (PAUT)

Ready to request a quote for some blocks? Here's what we need. What is the pipe material? What is the pipe NPS / OD size? What is the pipe schedule/wall thickness? Is NDE TECH supplying the material or will it be customer-supplied? Are there any changes or modifications requested to our block design? Call our office or drop us an e-mail with the above information. 

These pipe calibration blocks are specially designed to facilitate phased array UT (PAUT). The NDETECH block design includes various modifications to the original ASME design, including extra-axial and arc length, a rearranged notch layout, and a 10° angled cut on one end for blocks over 5" NPS. These modifications help to minimize unwanted "noise" from the back wall while performing DAC/TCG calibrations with phased array UT equipment. A calibration block should be a section of pipe of the same nominal size, schedule, heat treatment, and material specifications as the material being examined. we maintain a large inventory of raw materials for the machining of these standards and they can be made from customer-supplied materials as well. The Phased Array Pipe Calibration Block contains 4 EDM notches (axial and circumferential on both OD and ID) at a depth of 8-11% of nominal wall thickness x 1/4" maximum width (most notches are approximately .030" - .040" wide) x 1.000" minimum length. Blocks 5" NPS and smaller are left at 360°, while blocks over 5" are milled to a 180°/120°/90°/60° arc section (depending on nominal pipe size). All blocks are 12" in axial length minimum or 10T, whichever is greater. Made in accordance with ASME Section V Article 4 Figure T-43.3, with PAUT modification for PAUT.