1.1 本规范规定了适用于普通和螺杆机应用的编号为C31400、C31600和C32000的UNS铜合金的铜锌铅（含铅红黄铜或五金青铜）棒材、棒材和形状的要求。 1.2 单位- 以英寸-磅单位或国际单位表示的数值应单独视为标准值。在文本中，SI单位显示在括号中。每个系统中所述的值不一定精确相等；因此，为了确保符合标准，每个系统应独立于另一个系统使用，并且两个系统的值不应合并。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification establishes the requirements for copper-zinc-lead (leaded red brass or hardware bronze) rod, bar, and shapes of UNS Copper Alloy Nos. C31400, C31600, and C32000 available for general and screw machine applications. 1.2 Units— The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.