Pipeline Safety: Standards Update—ASME B31.4; Withdrawal

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Pipeline and Hazardous Materials Safety AdministrationOfficial agency material

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WithdrawalPipeline Safety: Standards Update—ASME B31.4; Withdrawal Rule; Withdrawal. Filed in Regulations.gov docket PHMSA-2026-1535.#

This material provides agency context. It does not replace binding regulatory text, and its legal effect depends on the underlying authority and facts.