ROLL FORMING MACHINES, ROLLER DIES, ROLLER STRAIGHTENERS, STRIP STOCK UNCOILERS AND RECOILERS, GUIDE ENTRY TABLES AND SIDE ROLL STANDS, CUT OFF MACHINES, TRIMMING AND BEADING MACHINES, LOCK SEAM AND ELECTRIC WELD TUBE MILLS, CUT OFF PRESSES, NOTCHING PRESSES, AND SLITTERS AND PARTS THEREOF