The present invention comprises a support arm which is deployed at an operating position and which is used for setting the position of the conduit end of the pump conduit, wherein each of the support arms is arranged in at least one tubular portion constituting a component of the pump conduit, To a concrete pumping device containing a support arm portion.;In order to raise higher, the present invention is characterized in that at least one of said support arm portions is stretchable so that the length of the retractable support arm portion from the unfolded start position is less than the length of each associated tubular portion One positioning means is provided; Characterized in that the positioning means comprises at least one end of the auxiliary tubular portion extending from a first position where the auxiliary tubular portion is aligned outside the volume occupied by the tubular portion to at least one end The second position being adapted to be aligned; Wherein the pump conduit is formed by a tubular portion and an ancillary tubular portion.
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