Currently　guided　wave　time-reversal　method　for　pipe　inspection　requires　using　multi-channels　to　excite　and　receive　signal　at　the　same　time.　After　studying　the　flexural　modal　cluster　exciting　properties,　a　new　time-reversal　method　based　on　single　oblique　transducer　with　partial　loading　exciting　L(M,　2)　modal　cluster　is　presented.　The　feasibility　of　time　reversal　focusing　method　with　L(M,　2)　modal　cluster　is　verified　using　oblique　transducer　array　and　self-developed　excitation/receiving　board.　The　focusing　effect　is　experimentally　studied　in　pipeline　with　crack　by　using　different　initial　excitation　signal　types,　center　frequencies　and　time　reversal　window　width.　The　results　show　that　in　different　inspection　frequencies　with　narrow　or　wide　bandwidth　initial　excitation　signal,　amplitude　of　the　defect　echo　and　S/N　ratio　have　significant　improvement　after　using　time　reversal　focusing　method,　thus　defect　echo　signal　can　be　obviously　distinguished　by　time　reversal　focusing　inspection.　©　2012　Journal　of　Mechanical　Engineering.