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MSS SP-93-2014

Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components û Liquid Penetrant Examination Method

Provides methods and acceptance standards for liquid penetrant examination of steel castings and forgings for valves, flanges, fittings and other piping components. It is applicable to examination of repairs as well as to initial examination of castings and forgings. The methods of Section 4 provide uniform procedures which will produce satisfactory and consistent results upon which the Acceptance Standards of Table 1 may be used. This Standard Practice includes the examination of pressure containing castings and forgings.

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Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [MSS]


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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

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