USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

UN Cylinders: What You Should Know

Document
PHH50_0078_0706_UN_Cylinders.pdf (292.13 KB)

This brochure describes the USDOT standards for the design, construction, and use of UN pressure receptacles, adopted into 49 CFR, Parts 171-180, effective September 11, 2006.

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact PHMSA-Accessibility@dot.gov.
Effective Date: Monday, September 11, 2006
Issued Date: Monday, September 11, 2006