Keg weights?

Afternoon fellow people.

Im working in a pub, and being the youngest one (19m) and the fact that the lads all know im in the gym 6 days /week, im the one bringing all the kegs into the kegroom every week lol.

But ive been wondering, how heavy are they? Yes i tried google but it was surprisingly shit. I know a 50L keg (Guinness, coors, Heineken etc) is about 60kg. So i assume a 30L (OT, beamish, morretti) is about 40ish? And the 20/25L ones like heineken 0, i assume about 30 maybe?

Just wondering if any of you lads would know the rough weight, out of curiosity

Thanking you x