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1.1 ,This specification establishes the requirements for seamless copper-nickel pipe and tube in straight lengths, suitable for general engineering purposes. The alloys involved are copper alloys UNS Nos. C70400, C70600, C70620, C71000, C71500, C71520, and C72200.
1.1.1 ,Copper alloys UNS Nos. C70620 and C71520 are intended for product that will be subsequently welded.