(a) Fire pail shall be made of galvanized iron or steel stock at least No. 24 U.S.S. gauge, with bottom welded in place or otherwise suitably reenforced, furnished with standard cars welded in place and with strong wire bail and loose fitting metal cover.

(b) Casks, drums or barrels should be of metal of at least No. 24 U.S.S. gauge but may be of any material free from leaks and having the durability necessary as determined by the inspection authority. They shall be provided with loose fitting covers. Fire pails therewith shall be hung on the sides of the containers or immersed therein.