I've seen people kicked until they fix it, not sure if the admin was correct in doing so though.
And I know there's no ping limit but people still don't want someone playing that has 800 ping or something ridiculous like that, and will usually votekick them. And if someone's ping masking they're obviously doing it for a reason so it's frustrating.
We kick people who are really lagging, if the player still joining I usually give a 10 min ban if the person starts to bother with the lag and re-join all the time and break out the fun..
-RESOLVED-
We kick laggers and we try our best to fit everyone on the servers.