StacksVerified U.S. regulatory reference

33 CFR §137.20

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The industry standards in ASTM E 1527-05, (Referenced in § 137.15) may be used to comply with the requirements set forth in §§ 137.45 through 137.85 of this part. Use of ASTM E 1527-05 for this purpose is optional and not mandatory.