A SINK ROLL FOR GUIDING AN ELONGATE STRIP TO BE PROCESSED IN A TREATING LIQUID TANK IN A MANNER SUCH THAT SAID STRIP IN MAINTAINED OUT OF CONTACT WITH THE OUTER SURFACE OF SAID SINK ROLL, COMPRISING A SEMICIRCULAR CYLINDRICAL GUIDE WALL PORTION PROVIDED WITH AT LEAST ONE RECESS OF SUBSTANTIALLY RECTANGULAR SHAPE, FLAT GUIDE WALL PORTIONS EXTENDING FROM THE DIAMETRICALLY OPPOSITE EDGES OF SAID SEMICIRCULAR CYLINDRICAL GUIDE WALL PORTION TANGENTIALLY THERETO, AND AT LEAST ONE CHANNEL OPENING IN THE RECESS AND COMMUNICATING WITH A PUMP TO SUPPLY THE PRESSURIZED TREATING LIQUID BETWEEN THE SURFACE OF THE SEMICIRCULAR CYLINDRICAL GUIDE WALL PORTION AND THE STRIP.