ASNT Level III- Visual & Optical Testing
My Level III Self Study Notes Reading 4 Section 4B
My Level III Self Study Notes Reading 4 Section 4B
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FIGURE 60. Documentation of stress corrosion cracking found in the welds of an anhydrous<br />
ammonia sphere; 3 percent nital etch at 200 x original magnification<br />
Charlie Chong/ Fion Zhang