Abstract: A split type sectional forming roll in which a split roll is formed at least two roll segments, a separating line of a roll segment to have an acute angle in a roll segment section adjacent to a side portion of another roll segment has an angle to a vertical line which is perpendicular to a roll shaft in outer peripheral portion and a separating line parallel to the above described vertical line in inner peripheral portion.Thereby the roll segments prevents damages of roll such as breakage or chipping out so that this split type sectional forming roll has a longer life sharply.