The MSS SP-55 standard is important for several reasons:
Send an excerpt (or a link to purchase) to your casting foundries. Require them to provide a certificate of compliance stating that all castings are evaluated per MSS SP-55, Revision [current year]. mss sp-55 standard pdf
– Sand trapped in the molten metal showing on the surface. The MSS SP-55 standard is important for several
: Ensure consistent lighting conditions for all visual inspections. Variations in lighting can significantly affect how surface irregularities appear. : Ensure consistent lighting conditions for all visual
– Irregularities in areas where defects were excavated and filled with weld metal.
The core of the MSS SP-55 standard PDF consists of a reference guide detailing twelve (12) specific types of surface irregularities. For each category, the standard provides photographic examples illustrating acceptable and unacceptable degrees of the condition. The 12 categories evaluated under MSS SP-55 include: