§178.506. Standards for metal drums other than steel or aluminum. — Inbound Citations

(d) Identification codes are set forth in the standards for packagings in §§ 178.504 through 178.523 of this subpart.

(2) A packaging identification code designating the type of packaging, the material of construction and, when appropriate, the category of packaging under §§ 178.504 through 178.523 of this subpart within the type to which the packaging belongs. The letter “V” must follow the packaging identification code on packagings tested in accordance with § 178.601(g)(2); for example, “4GV”. The letter “W” must follow the packaging identification code on packagings when required by an approval under the provisions of § 178.601(h) of this part;