Imikhiqizo yensimbi ene-Prespressed yenze intuthuko enkulu kusukela ngo-1950 wekhulu leminyaka elidlule, kunamaphuzu amabili ayinhloko ekuthuthukisweni kwayo. Okokuqala, amandla ezinto ezibonakalayo akhula kancane kancane, ukuze kuncishiswe usayizi nesisindo sezingxenye ezicindezelekile, kuze kwehle nezindleko zephrojekthi; Okwesibili, ngesisekelo sokuthuthukisa amandla, kufanele sinake ukuthuthukiswa kwezinto ezinokusebenza okuphezulu kwe-anti-corrosion, ukuze kuthuthukiswe ukuqina kwezingxenye zensimbi ezicindezelwe futhi zilondoloze izindleko zokulondoloza.
