Method of rolling finished sections from preliminary sections in reversing roll stand arrangements

A method of rolling finished sections from a preliminary section using roll stand arrangements which operate in a reversing operation, the roll stand arrangements including a compact rolling group composed of a first universal stand at an entry side and a second universal stand at an exit side and an intermediate edging stand arranged between the universal stands, and a roughing rolling group arranged in front of the compact rolling group and composed of vertical roll stands and horizontal rolls stands and/or universal stands, the method comprising, with one or more of the roll stands of the roughing rolling group and/or one or more of the roll stands of the compact rolling group being equipped with several selectable grooves which can optionally be moved into and out of a rolling line, or with grooves of a roll stand located next to each other which can become effective for rolling by displacing the rolling stock transversely of the rolling line, preshaping a rectangular preliminary section or a preliminary section having approximate final dimensions in the roll stands of the roughing rolling group in a number of shape changing passes or shape reduction passes, possibly in a reversing manner with or without the use of selectable grooves, subsequently further shaping the section in the compact rolling group, possibly in a reversing manner in several shape changing passes or shape reduction passes in the universal stand on the entry side, possibly in the intermediate edging stand with or without the use of the selectable grooves or grooves of the roll stands located next to each other, and subsequently shaping the section into the finished section in the universal stand on the exit side or in the intermediate edging stand, wherein the roughing rolling group includes a vertical two-high stand, a horizontal two-high stand and a universal stand, and the compact rolling group includes a tandem stand on the entry side, an intermediate edging stand and a tandem stand on the exit side, and wherein the horizontal two-high stand is equipped with two grooves or selectable grooves and the universal stand is equipped with grooved rolls, comprising edging a preliminary section having a rectangular cross-section or a cross-section approximately corresponding to the finished section in the vertical two-high stand, shaping the section in a section-changing manner in a plurality of successive passes in the first groove or the selectable groove of the horizontal two-high stand and in the universal stand and in corresponding reversing passes in the universal stand and in the horizontal two-high stand and subsequently in the second groove or selectable groove of the horizontal two-high stand in another pass, and then finish-shaping the section in three successive passes in the tandem stand on the entry side, in the intermediate edging stand and in the tandem stand on the exit side.