| 摘要 |
A seamless pipe made of copper alloy consisting of, by weight % , a total amount of 0.02 to 0.2% of Co, 0.01 to 0.05% of P, 1 to 20 ppm of C if needed, and remainder Cu, and unavoidable impurities and, as said impurities, the total oxygen content is regulated to 50 ppm or less, and useful for a heat transfer pipe of a heat exchanger and especially, when HFC-type fluorocarbon is used as a heating medium.
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