Different　from　foreign　specifications,　slender　sections　are　avoided　to　use　by　means　of　width-to-thickness　limits　in　Chinese　code.　In　particular,　the　plate　buckling　coefficient　is　constant　to　deal　with　I-shaped　and　channel　sections.　In　this　paper,　based　on　41　channels　dimension　data　originated　from　Chinese　standard　code,　the　classical　plate　buckling　theory　and　software　CUFSM　are　compared　under　the　circumstance　of　uniform　compression.　The　results　obtained　from　the　two　methods　are　always　in　good　agreement.　However,　three　sections　cannot　be　solved　by　CUFSM.　The　average　value　of　web　buckling　coefficients　is　5.240.　Since　the　interaction　influence　of　elements　is　considered　in　these　analyses,　these　data　can　be　used　directly　in　Direct　Strength　Method　(DSM).