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BS 5M 23 87th Edition, November 30, 1987
Complete Document
Active, Most Current
Specification for an Identification Scheme for Pipelines
Includes all amendments and changes through Reaffirmation Notice , November 1, 2010
Additional Comments: SAME AS ISO 12 * INCLUDES AMENDMENT 1
Page Count:9
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Includes a modified scope and field of application. A symbol for filtered air has been added, and details of the supplementary marker have been expanded.