1) Combustion Liner : The combustion space is mixed with the combustion air with fuel supplied from the fuel supply. It sends the combustion gas to the turbine blades and vanes, 2) Transition Piece : Send a combustion gas mixture in the combustor basket to one Vane, 3) Cap Assembly : Fix and Stand for fuel nozzle Precaution for flame flash back from combustion Liner under burn, 4) Shroud Block : Role by using the Bucket tip clearance of a gas leak to a minimum and turn off heat between the hot gas and the casing