American standard test block
1、ASME non-pipe weld test block
2、American Welding Society standard test block AWS D1.1
3、American Petroleum Institute standard test block
Japan national standard test block
1、JIS-STB-A1（Same as IIW test block）JIS-STB-A2 (Used to adjust or indicate the sensitivity of a single probe or a double probe method for oblique detection. It can also be used for the determination and expression of comprehensive resolution of the flaw detector).
(As an auxiliary standard test block used in the field for A1 and A2 test blocks, it can be used for determining the incident point, adjusting the time axis, correcting the origin of the time axis, determining the refraction Angle and detection sensitivity)
(Used for various adjustments, minimum detection distance verification, etc.) See figure and table for size and shape.
V2-v8 are processed with φ2 flat bottom holes, and V15-2 is used for sensitivity characteristics test at 2 ~ 15mm detection distance, and the reflected pulse height is within the specified value of ±1db. V15-1 ~ V15-5.6 is drilled with φ1.0 ~ φ5.6mm flat bottom holes, and the area ratio of adjacent hole bottoms is twice in turn. It is used to adjust the sensitivity of flaw detection.
British standard test block B.S.A.3 test block
It can be used for calibration of time axis, adjustment of flaw detection sensitivity, determination of probe incident point position, determination of refraction Angle and determination of acoustic beam characteristics.
内包装橙色工程塑料
外包装（纸箱）
