Yes that is true. They usually appear at level 53 and evolve at level 54 to Metang.
you can catch beldum at route 228 with poke'radar
if you wanna catch beldum it a mass outbreak on route 228
Pokemon like Anorith, Lileep, Beldum, those kind.
check in the pokedex
Steven Stone will give you a Beldum in exchange for a Forretress.
You get Beldum for free, from Steven after you finish the Pokemon League, go to Stevens house and the ball will be on the table.
You cannot catch Beldum in Pokemon HeartGold. However, you can trade for it. After you have gone to Silph Co. and met Steven to get your Hoenn starter Pokemon, you can go back after a little bit to find him again, and he will give you a Beldum if you trade him a Forretress.
You cannot catch a Metang in Pokemon Diamond. To get one, you can evolve a Beldum.
You CANT. MWAHAHAHAHAHA. -coughs-
you use a pokeball in Pokemon dimand and pearl you can not get beldum only in Pokemon emerald you have to beat the elite four go to wallys house in mousdeep there will be a poke ball click on it and you have a beldum to get beldum in fire red and leaf green trade it in Pokemon ruby and Sapphire can get beldum too what are you talking about,you CAN catch beldum in diamond and pearl.you have to get the national pokedex and talk to your rivals sister in her house and you can catch it in a swarm Unfortunatly, it shares the " hardest to catch Pokemon" award with Skarmory"-thy both have 2.98 percent catch rates. Arceus is easyer to catch.
go to sandgem town, in dawns house a girl there will tell you routes where rare Pokemon can be found, hopefuly she will say a route where beldum can be found
You can't catch Metang in emerald. You can only get Beldum, and then you can evolve it into Metang.