WG type roller reamer is used for reaming in drilling operation,especially used for the function of stabilization in drilling of the abrasive formation,it is a very popular tool, this tool can equip with three structure rollers and be suitable for hard formation in reaming operation.
Type T is machined with hardfaced sharp teeth for soft formation.
Type F is hardfaced flat teeth with anti-abrasive welding rod on its surface for medium hard formation.
Type B is with pressed-in tungsten carbide buttons, for hard formation.