Ribbon flight is rolled to your flighting size from heavy material. Standard pitch flights are the most common. This is when the pitch distance is equal to the outside diameter. Long pitch flights are used to speed up the flow of the material. Helicoil flighting is tapered from the center to the outer edge.
Sectional flight has the same thickness across the flight.
This is produced by cutting a circle from a plate of steel and stretching it to the desired pitch. Each piece can only be 1 pitch in length. This gives you longer wear without adding any weight to your unit.