Device for reducing embedded or own friction in a multi-line pipe

A multiduct pipe straightener apparatus (6) configured for reducing friction in a multiduct pipe with a bundle of ducts within an outer casting. The apparatus comprises a first arrangement (101) of at least two straightening rollers (7) with a first row spacing (8A) between adjacent rollers and arranged for pressing the multiduct pipe on a side when pulled along the rollers and a second arrangement (102) of at least two rollers (7) with a second row spacing (9A) between adjacent rollers with at least one roller arranged opposite the first row spacing and arranged for pressing the multiduct pipe on the opposite side when pulled along the rollers.