Kamfanin ya gabatar da na farko Crampton locomotive a Faransa, da kuma samu umarni daga ba kawai da Chemin de Fer du Nord, amma kuma da Paris Orléans da kuma Paris Lyon jiragen kasa. Wani rikicin kudi (da kuma
1848 juyin juya halin) ya haifar da koma bayan tattalin arziki, da kuma raguwa a cikin umarni na locomotive, yana ƙarfafa kamfanin don rarraba. Wani sabon samfuri shine samar da injunan juya. Wani kuma shi ne kera gadar ƙarfe, kuma a shekara ta 1852 kamfanin ya gina gadar ƙarfe ta farko a Faransa. Ginin, wanda aka gina na Seine a Asnières yana da tsawon mita. Duk da umarni mara kyau kamfanin ya fadada cikin sauri; a shekara ta 1856 fitar da hannun jari na biyu ya ninka babban birnin kamfanin, a wannan shekarar kudaden shiga na kamfanin ya kai francs miliyan 7. A cikin 1855 an faɗaɗa masana'antar kamfanin don saukar da ginin gadoji na baƙin ƙarfe. Ƙarin umarni don gadaje na ƙarfe sun fito ne daga Faransa, da ƙasashen waje, suna ba kamfanin aiki na shekaru da yawa, da ci gaba mai ɗorewa. Don ramawa game da rashin tabbas a cikin kasuwancin ginin locomotive, kamfanin ya fara samar da injunan tururi, da kuma ginin jirgi <unk> sayen babban jirgi a Nantes, kuma ya zama mai ba da jirgin ruwan Faransa.