ASME B31.4

Pipeline Transportation Systems for Liquids and Slurries

Published by American Society of Mechanical Engineers (ASME)

The CFR incorporates ASME B31.4 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.

The edition the CFR requires

ASME B31.4-2012, November 12, 2012

As the CFR lists it: “ASME B31.4-2012, Pipeline Transportation Systems for Liquids and Slurries, November 12, 2012”

  • Listed in 49 CFR 171.7(v)(2); required by49 CFR 173.5a ↗
    The parts the listing names (1)
    • ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 1942, telephone (610) 832-9585, http://www.astm.org. Copies of historical standards or standards that ASTM does not have may be purchased from: Engineering Societies Library, 354 East 47th Street, New York, NY 10017

How to read it

A free or purchased copy may not be the edition the CFR names; check it against the edition above. Every incorporated standard can also be inspected at the National Archives (NARA) and at the agency named in the section that lists it.

ASME B31.4 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.