Steelix can be found most commonly in the Victory Road, which is the road you travel on your way to the elite four. When you find it, the steelix will usually be around level 40-48. Water is super effective against steel, so bring a water Pokemon when trying to catch it, and try to get its hp low before throwing a poke-ball.
Fire and fighting type Pokemon are also pretty effective against steel, so you can use them if you don't have a water Pokemon handy at the moment.
Also, if you don't want to wait to catch Steelix in Victory Road, you can catch one in the Iron Island near Canalave. They are around levels 30-33. Just talk to the sailor who's standing near the boat and he will sail you off to the island. I believe that Steelix can be found in B2F (left) or B3F. They are really uncommon, so it might take a while to find one. Good luck searching (=
Sources:
a) http://bulbapedia.bulbagarden.net/wiki/Iron_Island
b) http://bulbapedia.bulbagarden.net/wiki/Steelix_%28Pok%C3%A9mon%29#Game_locations
c) http://www.dltk-kids.com/Pokemon/battle.htm
d) http://Pokemon.marriland.com/hgss/pokedex/steelix/#dex_nav_location
AnswerIn Pokemon Platinum, Fire Fang is a base move of Steelix's. This means that if Steelix does not have Fire Fang in its moveset upon capture, you can take it to the Move Tutor in Pastoria City (on any level) and teach it to Steelix again.
the same one that evolves into it in any other game! Onix! I pray you didn't mean this...
top of spear pillar
You can't capture one in Platinum, but you can transfer one from Ruby, Sapphire, or Emerald.
Onix will evolve by doing this: Have it hold a metal coat trade it to a friend then take it back you should receive Steelix.
AnswerIn Pokemon Platinum, Fire Fang is a base move of Steelix's. This means that if Steelix does not have Fire Fang in its moveset upon capture, you can take it to the Move Tutor in Pastoria City (on any level) and teach it to Steelix again.
Steelix
u die
you can catch a steelix at iron island
You cannot capture a Steelix in anywhere, much less a Safari Zone. The only way to get a Steelix is to trade an Onix with a Metal Coat attached. In the HeartGold and SoulSilver versions, you can also get trade for her Steelix after you battle Jasmine for a rematch.
508 You will need Fire Blow and it will be in between the two rotten logs
A lv.37 Magneton, a lv. 38 Steelix, and a Lv. 41 Bastiodon.
No, you can't. You can capture it only in Ruby and Emerald and then migrate it.
You cannot capture Bulbasaur in Diamond or Pearl (not sure about Platinum).
its not darkiye
Magneton Lv37, Steelix Lv38, and Bastiodon Lv41 Hope this helps!
the same one that evolves into it in any other game! Onix! I pray you didn't mean this...