There`s loads of ways of creating this kind of sub rumble.
Placing silly amounts of reverb on a sub sound, and making it all sit under the kick.
Or, sampling the reverb on it`s own and then using that to go under the kicks.
Or just mashing up some samples of industrial booms and hits, and playing them down low for some serious rumble.
Or just using pure sine sub right down low.
It all depends on the type of tune and effect you are going for.
It`s become a techno cliche as much as hardhouse has the oompah bassline.
But it is nice ;)