An air conditioner comprising: a compressor configured to compress a refrigerant; a refrigeration cycle component configured to form a part of a refrigeration cycle together with the compressor , the refrigeration cycle component being installed at at least one of an upstream side and a downstream side of the compressor to allow flow of the refrigerant to supply the refrigerant to the compressor or be supplied with the refrigerant from the compressor ; and a stainless pipe made of a stainless steel, the stainless pipe having one end connected to the compressor and the other end connected to the refrigeration cycle component , to form a single pipe between the compressor and the refrigeration cycle component , the stainless pipe partially having a corrugated part to attenuate vibration transferred from the compressor to the refrigeration cycle component , wherein the corrugated part is formed by processing at least a portion of the stainless pipe such that ridges (230e1) and valleys (230e2) are alternately disposed, characterized in that the at least a portion of the stainless pipe is integrally formed with a remaining portion of the stainless pipe , a thickness (T1) of the stainless pipe at the ridge (230e1), a thickness (T2) of the stainless pipe at the valley (230e2), and a thickness (T3) of the stainless pipe between the ridge (230e1) and the valley (230e2) have differences of exceeding 0 to 2% or less, and the thicknesses (T1, T2, T3) and a thickness (T4) of the stainless pipe in the region in which the corrugated part does not exist have thickness differences of exceeding 0 to 5% or less. a compressor configured to compress a refrigerant; a refrigeration cycle component configured to form a part of a refrigeration cycle together with the compressor , the refrigeration cycle component being installed at at least one of an upstream side and a downstream side of the compressor to allow flow of the refrigerant to supply the refrigerant to the compressor or be supplied with the refrigerant from the compressor ; and a stainless pipe made of a stainless steel, the stainless pipe having one end connected to the compressor and the other end connected to the refrigeration cycle component , to form a single pipe between the compressor and the refrigeration cycle component , the stainless pipe partially having a corrugated part to attenuate vibration transferred from the compressor to the refrigeration cycle component , wherein the corrugated part is formed by processing at least a portion of the stainless pipe such that ridges (230e1) and valleys (230e2) are alternately disposed, characterized in that the at least a portion of the stainless pipe is integrally formed with a remaining portion of the stainless pipe , a thickness (T1) of the stainless pipe at the ridge (230e1), a thickness (T2) of the stainless pipe at the valley (230e2), and a thickness (T3) of the stainless pipe between the ridge (230e1) and the valley (230e2) have differences of exceeding 0 to 2% or less, and the thicknesses (T1, T2, T3) and a thickness (T4) of the stainless pipe in the region in which the corrugated part does not exist have thickness differences of exceeding 0 to 5% or less. <EOS>