Ithebula elilandelayo libonisa amamodeli esakhiwo sensimbi avame ukusetshenziswa, okuhlanganisa insimbi yesiteshi, i-I-beam, i-engeli yensimbi, i-H-beam, njll. H-beam Ubukhulu ububanzi 5-40mm, ububanzi ububanzi 100-500mm, amandla aphezulu, isisindo esilula, ukubekezela okuhle. I-I-beam Ubukhulu ububanzi 5-35mm, ububanzi ububanzi 50-400m...
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