Highly corrosion-resistant copper pipe

One of the purposes of the present invention is to provide a highly corrosion-resistant copper pipe which exhibits higher resistance to ant-nest-shaped corrosion and which is suitable for use in an air conditioning apparatus or a refrigerating apparatus. The other thereof is to improve advantageously the lifetime of such an apparatus using a copper pipe. A copper pipe which contains 0.05 to 1.0wt% of phosphorus (P) with the balance being copper (Cu) and unavoidable impurities.