While the remains king, the industry is moving toward digital twins and AI visual inspection. However, even the most advanced AI models are trained on the visual acceptance criteria laid out in the MSS SP-55 PDF.
For piping under ANSI/ASME B16 pressure classes, MSS SP-55 is the superior choice. Do not substitute.
: The standard is intended for use on any 4 in. x 5 in. (100mm x 125mm) area of a casting surface.