No, Steelix is the evolved and final form of Onix
steelix does not evolve
Steelix is a Steel and Ground type pokemon.
Steelix
Steelix
Onix does not evolve by level, it evolves into Steelix by trade whilst holding a metal coat.
Onix evolves into Steelix, while holding a Metal Coat and traded. Steelix can also Mega Evolve, but cannot evolve into any other Pokemon.
If you want to get a Steelix you must give it a item, called a Metal Coat to a Onix, and Then trade it to a friend, and it will evolve to Steelix.
it doesnt.....unless pokemon brings up the next pokemon and shows steelix's evolution
trade it with a steel coat
the Pokemon that evolve with metal coat are steelix and scisor
well onix can evolve if you have a metal coat is onix has the metal coat on it if you trade it with a friend and you friend gives it back you will have a steelix.
Onix doesn't evolve at a level. You have to give it the item 'Steel Coat' and trade it to make it evolve into Steelix. Or just catch a steelix at Victory Road using dusk balls