The difference between rebar and crescent
From the shape of the rebar, the longitudinal rib and the cross rib intersect to form a thread; the crescent shaped steel bar looks from the shape, the longitudinal rib and the transverse rib do not intersect.
The thread and Crescent are 45 degrees diagonally raised, the thread is straight, crescent shaped arc, like a watermelon rind.
Rebar -- steel used in concrete structures with a generally rounded cross section and ribbed surface.Longitudinal ribs -- uniform continuous ribs parallel to the axis of the steel bar -- other ribs not parallel to the axis of the reinforcement.The longitudinal section of crescent ribbed bars -- transverse rib reinforced crescent, and does not intersect with longitudinal ribs.