Steel is harder than concrete but it'd take quite a while for me to chip a hole in it with a chisel. Now if Hulk had razor sharp adamantium claws, watch out boy.
Imagine if Wolverine did get a good cut on Colossus but then Colossus shifts and Wolverine's claws get stuck. I wonder if they'd share a brief laugh before Colossus cleans his clock.
wolverine win slightly win this because he is faster, more experienced more skilled, accelerated healing factor, adamantium bones and retractable razor-sharp adamantium claws and most of all berserker rage!!!, wolverine has taken folks like the hulk, thing, namor, juggernaut, blob etc, and they all felt pain from his claws, although if he does not have enough power to pierce colossus, he has enough to scratch colossus' skin, and yes colossus would definitely feel pain from wolverine's claws, too much of that pain will knock the shit out of colossus, but colossus will give wolverine a hard time.
remember guys when wolverine goes berserk he becomes even stronger and faster but still conscious of his fighting skills......so with berserk it is possible that wolverine can stab or cut colossus