Bobinas de aluzinc / gariiradaha birta ee ugu horreeya waxay leeyihiin labada sifooyin ee xaashida birta galvanized kulul iyo xaashida birta aluminium-ku-kulul.Sidaa darteed, meesha xaashida birta galvanized ee kulul la isticmaalo, gariiradda birta aluzinc ayaa la isticmaali karaa, waxayna sidoo kale qayb ahaan bedeli kartaa xaashida birta aluminium-kulul-kulul.Waxay leedahay codsiyo kala duwan oo kala duwan, sida saqafka saqafka, darbiyada gidaarka, birta khafiifka ah, hiitarka kuleyliyaha, meydadka baabuurta, haamaha shidaalka, cajaladaha birta gaashaaman ee fiilada, koriyooyinka balaastiigga ah, weelasha maraakiibta, qalabka guriga iyo qalabka, Foornooyinka, qaraxa -suunka birta ah ee aan caddayn, daboolka sare ee qaboojiyaha iyo nidaamyada hawo-qaadista, kuleyliyaha biyaha qorraxda, sanduuqyada baakadaha ee alaabta kiimikada, iyo saxannada midabka midabka, tuubooyinka alxanka, daaqadaha birta, qalabka birta qabow-sameeyay ee warshadaha birta, iwm., waxay leeyihiin a Rajada codsiga aad u ballaaran.