Slip-On Semi-Rigid Welded Bow Spring Centralizers have the same design and characteristics as Hinged Welded Centralizers. It can directly be installed into the pipe and is provided with set screw style Stop Collars to extend the holding force. These Collars are specially designed with roll-formed peripheral ridges which provide them extra rigidity. These Centralizers are available in a variety of Bows configured from a choice of four standard Bow heights.