Mss Sp-55 Standard Pdf |link| Here

– Linear fractures; generally never acceptable.

The edition recently replaced the 2011 version. A major update in this version is the inclusion of iron and ductile iron castings , expanding the standard's scope beyond just steel. It also aims to align surface quality expectations more closely between manufacturers and purchasers in the broader piping industry. MSS SP-55 - Manufacturers Standardization Society mss sp-55 standard pdf

– Voids caused by metal contracting during solidification. – Linear fractures; generally never acceptable

– Evidence of incomplete fusion of internal supports. – Linear fractures

The standard is most known for its collection of illustrating various surface irregularities. These photos allow inspectors to perform a side-by-side visual comparison with actual castings to determine if a surface condition is acceptable or rejectable. Key Features and Scope