Metang evolves FROM Beldum at Level 25
Metang evolves INTO Metagross at Level 45
For more information try these two sites:
http://pokemondb.net/evolution
http://www.pokemon.com/us/pokedex
metang evolves at level 40 normally
but it can evolve at level 30 to 50 depens on the game
on Pokemon emerald 45
Metang will evolve at level 45.
Metang evolves into a Metagross at level 45.
Metang will begin to evolve into Metagross once it hits Level 45.
Metang evolves into a Metagross at level 45
Beldum evolve into Metang at lv20 and Metang evolve into Metgross at lv45
Beldum evolves into Metang at Level 25, and Metang evolves into Metagross at level 40. Level up Metang to Level 40.
level 55
Metang evolves FROM Beldum at Level 25 Metang evolves INTO Metagross at Level 45
It evolves into metang at level 20 and metang evolves at level 45 into metagross
Metang evolves into Metagross at Level 45.
In Pokémon Conquest, after recruiting Metang which you can only do so by finding Beldum (who is available in the Illusio and Valora Kingdoms) and evolving it you can then evolve Metang according to the level of its defensive stat, Metang will not evolve into Metagross until its defensive stat is at least 111.
Yes, Metang will continue to attempt to evolve until it reaches level 100.