ʻO Fang Gang: He paʻa, mea paʻa.'Oko'a mai ka paipu huinahalike, no ka paipu ka puhaka.Ke kila (Steel): He mea ia me nā ʻano like ʻole, ka nui a me nā waiwai i koi ʻia e nā ingots kila, billets a i ʻole ke kila ma o ka hana kaomi.He mea koʻikoʻi ke kila no ke kūkulu ʻana i ka ʻāina a me ka hoʻokō ʻana i nā hana hou ʻehā.Hoʻohana nui ʻia a loaʻa nā ʻano huahana like ʻole.E like me nā ʻano like ʻole o ka cross-sectional, hoʻokaʻawale ʻia ke kila i ʻehā mau ʻāpana: profiles, plates, pipes a me nā huahana metala.