– Small holes or voids from trapped gas.
: Electronic (PDF) versions found on sites like Scribd or Peninsula Alloy are often marked for reference only . For code-compliant inspections, the printed version from MSS is typically required because screen resolutions can distort the reference photographs. Recent Updates (2025 Edition)
: The standard is intended for use on any 4 in. x 5 in. (100mm x 125mm) area of a casting surface.
: Specifically covers steel and (in the 2025 edition) iron castings for valves, flanges, and fittings.
– Ridges on the surface from mold sand cracking.
– Linear fractures; generally never acceptable.
