a reusable plastic drum container assembly having a fitting - receiving member in an opening provided in a drum head wherein the opening is formed by a cylindrically - shaped indentation portion extending perpendicularly from the top surface of the drum head and wherein the fitting - receiving member in cross - section is of an inverted u - shape having an inner cylindrically - shaped portion , a circularly - shaped base portion , and an outer cylindrically - shaped leg portion defining a channel and is disposed over the neck member of the drum head with an electromagnetic bonding material fused between the outer surfaces of the neck member and the interior surfaces of the fitting - receiving member .