PDC Drillable Top And Bottom Cementing Plug Conventional cementing plug is divided into top plug and bottom plug. Special plug has top/middle/bottom plug used in two-stage cementing, drill pipe plug and hollow plug used in drilling liner cementing and composite plug used in composite casing. PDC Drillable Top And Bottom Cementing Plug Special materials designed for easy drill out with PDC bits Normal and non-rotating type can be available The non-rotating type can save the drilling time Size: 4 1/2"--20 PDC Drillable Top And Bottom Cementing Plug Specification: Inch size MM O.D(mm) Labial ministry diameter(mm) Main body diameter(mm) Bore Dia (mm) Length (mm)…