PH Tool ASME-Style Pipe Calibration Block (PAUT)

These pipe calibration blocks are specially-designed to facilitate phased array UT (PAUT). The PH Tool 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.

We pride ourselves in providing fast deliveries. However inventory changes rapidly and on occasion some items may not be in stock. If you require an expedited shipment, please contact us via e-mail or call our office to confirm availability of an item. *Nominal lead times vary by product.

Product Information

A calibration block should be a section of pipe of the same nominal size, schedule, heat treatment, and material specification as the material being examined. PH Tool maintains a large inventory of raw material for the machining of these standards, and they can be made from customer-supplied material as well.

Our Phased Array Pipe Calibration Blocks contain (4) EDM notches (axial and circumferential on both OD and ID) at a depth of 8-11% of nominal wall thickness x 1/4 max wide (most notches are approximately (0.030-0.040) wide x 1.000 min long. 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-434.3, with PH Tool modification for PAUT. In small quantities, blocks can be shipped in approximately 1 week, with rush options always available. Larger quantities will take longer, however we’re happy to offer partial shipments.

To request a quote, please press the Request A Quote button and include the following info in the Notes section of the RFQ

  • What is the pipe material?
  • What is the pipe NPS / OD size?
  • What is the pipe schedule / wall thickness?
  • Is PH Tool supplying the material or will it be customer supplied?
  • Are there any changes or modifications requested to the our block design?
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