Conversation so far:
how much does an empty quarter keg weight
The empty keg weight of a quarter barrel keg is 22 pounds.
what materials are beer kegs made of
In recent times, a keg is often constructed of stainless steel.
what materials were beer kegs made of
Traditionally, kegs were made of wood.

Question: What is the heaviest type of keg?
Self-contained rewrite: What is the heaviest beer keg?