Steelix

It would seem that the random number generator likes defensive pokemon, because yet again we have another monster in defense. None other than Steelix, rivaled only by two, Shuckle and Regirock in defense. So let's see, Steelix, well he can take hits, sorta well I suppose. If stealth rock is your thing, you can always get a free stealth rock up, with one of Steelix's ability sturdy. My personal experience says that Steelix isn't that big of a threat as long as you have a physical wall or a special attacker. With no recovery move aside from rest, you shouldn't have any problems taking one out. Though 5th gen was a little nice to Steelix, it has the dream world ability sheer force, so you can have a bulky attacker.

Move Sets :

Wall set

Ability : Rock Head/Sheer Force/Sturdy

Item : Leftovers

Earthquake
Stealth Rock
Gyro Ball/Rock slide/Stone Edge
Rest/Toxic

Ev's : 252 HP/ 252 Sp Def/4 Def
Nature : Careful


Curse

Ability : Sheer Force

Item : Leftovers/Life Orb

Curse
Earthquake
Gyro Ball
Rest/Crunch

Ev : 252 HP/252 Sp Def/4 Def
Nature : Sassy

I suggest Sheer force for this set simply because it is an attacking set, but you can also use Rock head, if you intend on doing moves that recoil. Life Orb doesn't take recoil with Sheer force, so if you are comfortable with it go for it.


I don't really have much to say about Steelix, I am not over all impressed by Steelix due to being outclassed in the lower tiers by pokemon like Regirock and Weezing. But if you insist on using one I suggest one of those sets.