Continuous Pre-forming - Nekuenderera mberi-kuumba nzira, kuumba kunopihwa yakatsanangurwa pre-shape mune imwechete yekuumba kufamba. Mamwe echinyakare anoshandiswa pre-forming units ndeye hydraulic kana mechanical presses pamwe nemacross rolls. Iyo inoenderera maitiro inopa mukana, kunyanya yealuminium, iyo pfupi nzira inosanganisira kutonhora kushoma kwechikamu uye nguva dzekutenderera dzakakwirira dzinogona kusvikwa. Chisina kunaka ndechekuti dhigirii rekugadzira rinowanzo kuganhurirwa mukutanga-kuumba maitiro, sezvo chete mashoma mashoma esimba uye mashoma ekugadzira kugona anowanikwa kune chikamu mukati meimwe sitiroko (yekudhinda) kana imwe chete shanduko.