Final rule · 2025-12073

Pipeline Safety: Standards Update-ASTM A381/A381M

This DFR amends PHMSA's regulations to incorporate by reference the updated industry standard ASTM A381/A381M-18, Standard Specification for Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel Pipe for Use with High-Pressure Transmission Systems. This updated standard will maintain or improve public safety, prevent regulatory confusion, reduce compliance burdens on stakeholders, and satisfy a mandate in the National Technology Transfer and Advancement Act (NTTAA) of 1995.