Aight. Those blue drums are awesome, and here's why: First, buy the open top type drums as opposed to the closed lid drums (as mentioned by Wierdguy). Second, Leithoa, buy sanitary food grade DRUM LINERS. The liners for 50g drums (as I know from experience) are about $2.50 each.
Now you have a totally sanitary environment each brew, a completely open top so you can get right in there if you need to, standard fittings onto which you can fasten all kind of cool things. On our 55g blue drums, we do it exactly like this, and use a fitting we've hooked up to our co2 tank to push in, which we "siphon" out from a pex dip tube on the other side to an outlet which then goes into a kegs or whatever you have.
We're already sourced the drums and liners; they're on order. Once receive them, we'll use them at first for sample brews, and once we get a workable transfer "system", we'll probably be selling the whole thing retail to customers -- if you're like most of y'all here, you can source the parts and hacker it together yourselves...either way, it's really a GREAT way to do up to 15g batches (typical home brew) with easier to clean containers.
We're simply tired of getting spoiled fermentations in some kegs we've been using, and we're ready to pay a little more per batch to ensure total annihilation of all criters! Cheers.