CGA Regulatory Alert (RA-220): U.S. DOT PHMSA Safety Advisory Notice: Unapproved Foreign-Made DOT Cylinders

November 11, 2019

Please be advised that the Compressed Gas Association has issued a CGA Regulatory Alert (RA-220) regarding the November 1, 2019 Safety Advisory Notice  by the Pipeline and Hazardous Materials Safety Administration (PHMSA) of the U.S. Department of Transportation (DOT).

PHMSA Safety Advisory Notice

Hazardous Materials: Unapproved Foreign-Made DOT Cylinders

We recommend that all CGA members review this notice to determine its applicability to their company. Individuals who work for CGA member companies may access and download a copy of CGA RA-220 from the Association’s member portal (login required).


PHMSA has issued this Safety Advisory Notice to inform the public, industrial gas stakeholders, and relevant government officials of the risks associated with requalifying, filling, and transporting cylinders bearing the DOT specification markings “DOT 4E” or “DOT 4BA” that were produced by a company located in Thailand by the name of Metal Mate.

Metal Mate does not have an approval from PHMSA to manufacture cylinders to DOT specifications. Therefore, cylinders marked with the Metal Mate name are not DOT specification cylinders. They must not be used to transport hazardous materials in commerce to, from, or within the United States, or on a United States-registered aircraft. These cylinders may not perform to the marked DOT performance standard and may not be safe for commercial transportation or consumer use.

A copy of this notice can be found in the Federal Register Volume 84, Issue 212 (November 1, 2019), on pages 58829-58830.