SMYS Rating Prefix
SMYS Rating Prefix
(OP)
Can someone explain the prefix letter on SMYS ratings. For example I have always seen pipe with an X (i.e. X42, X52). But I have seen fittings listed as F52 or Y60. What is the difference between the prefixes?





RE: SMYS Rating Prefix
Specifications for API 5L adhere to the International Organization for Standardization ISO 3183, which standardizes pipeline transportation systems within the materials, equipment and offshore structures for petroleum, petrochemical, and natural gas industries. The technical committee authoring the standards recognized that there are two basic Product Specifications Levels (PSL) of technical requirements and therefore developed PSL 1 and PSL 2. PSL 1 is a standard quality for line pipe where PSL 2 contains additional chemical, mechanical properties, and testing requirements.
Grades covered by this specification are A25 ,A ,B (and the following "X" Grades), X42, X46, X52, X56, X60, X65, X70, X80. The two digit number following the "X" indicates the Minimum Yield Strength (in 000's psi) of pipe produced to this grade.
- See more at: http://www.fedsteel.com/products/carbon-pipe-and-t...
http://www.pdhonline.org/courses/m184/Material%20D...
RE: SMYS Rating Prefix
The Y will be to a different specification, probably some sort of plate
Pipe to 3183 is now referred to by the yield strength in MPa, so X52 should now be called L360. 3183 has a number of letter designations for pipe strength which means different things.
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RE: SMYS Rating Prefix
https://law.resource.org/pub/us/cfr/ibr/004/mss.sp...