In　this　paper,　a　dynamical　model　of　spinning　multi-span　pipes　conveying　fluid　is　proposed　and　the　transverse　natural　and　resonant　frequencies　and　mode　characteristics　of　such　system　are　explored.　The　pipe　body　is　considered　to　be　composed　of　functionally　graded　materials　(FGMs),　in　which　a　power　law　is　used　to　govern　the　distribution　of　material　properties　along　the　pipe　wall　thickness.　The　partial　differential　equations　(PDEs)　governing　two　transverse　motions　of　the　pipe　are　derived　by　the　extended　Hamilton　principle,　in　which　the　contributions　of　the　FGM　and　intermediate　supports　are　highlighted.　The　PDEs　are　discretized　by　the　Galerkin　procedure　and　the　eigensystem　theorem　is　applied　to　find　the　numerical　solutions.　The　results　show　that　various　frequency　characteristics　can　be　attainable　by　use　of　different　materials　and　mixing　patterns.　Attachments　of　intermediate　supports　can　heighten　the　rigidity　and　improve　the　stability　of　spinning　FG　pipes　conveying　fluid,　which　are　consequently　used　as　＂stabilizers＂　for　the　slender　drill　strings.　Also,　the　mode　characteristics　of　different　spans　will　determine　the　locations　of　vibration　amplitude　of　the　pipes.　(C)　2020　Elsevier　Inc.　All　rights　reserved.