What is flat top crimped Wire mesh

Flat top crimp is similar to the lock crimp, but all of its crimping is offset to one side of the material. This creates a smooth top surface—with no high points—as all wires are woven on a single plane. Its bottom side, however, has crimp bumps approximately twice the height of lock crimp bumps. Flat top was originally created to allow for the smooth flow of materials over the surface and provide a flat face for use as backer screens. Flat top is ideal for aggregate sizing and sorting, agriculture, filtration, and heat-treating applications