Abstract: The present embodiments relate to systems for building and/or handling a tubular string of a drilling device. The drilling device comprises a drill floor and a drilling derrick extending from the drill floor. The drill floor has an extension in a first plane (P1) being substantially perpendicular to a first direction (N). The system comprises a suspension device being fixedly attached to the drilling derrick, wherein a projection of the suspension device, in the first direction, onto the first plane (P1), is situated outside the drill floor. The present embodiments also relate to drilling device trolleys arranged to transport a component to and from a drilling center of a drilling device. The present embodiments relate to a use of a drilling device having a drill floor, wherein the drilling device has a suspension device being situated outside the drill floor.