THE APPLICATIONS AND DEVELOPMENTS OF RESTRAINED MANDREL MILLS WORLDWIDE（PARTⅡ）

The process features of the full-floating,half-floating and restrained mandrel mills as well asthe developments of restrained mandrel mills worldwide are briefed.The article respetively describesthe outlines,produetion process flows,major equipment characteristics and performances with respectto φ355.6mm PPM-MPM train in Dalmine,Italy,φ273mm MPM train in Tamsa Co.,Mexico,φ244.5mm PPM-MPM train in Fairfield Works,American Steel Co.,φ177.8mm MPM train in AlgomaSteel Corp.Ltd,Canada and φ250mm restrained mandrel mills both in Siderca Works,Argentina andin General Tianjin Steel Tube Plant,China.