Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring

Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses or tabletting presses > Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring

Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses (for clay or mixtures containing cement B28B; for plastics materials B29) > Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring