1.1 本试验方法确定了内径为0.125英寸的铜和铜合金管和管子的膨胀销试验要求。（3.2 mm）及以上，或外径小于等于4 in。（102毫米）。 注1: 适用于内径小于0.125英寸的管道。（3.2 mm），制造商和买方必须商定替代试验方法。 注2: 对于尺寸大于4英寸的管道。外径（102 mm），参见 B968/B968M 用于测试方法。 1.2 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 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。 ====意义和用途====== 5.1 当正确执行和解释时，膨胀销测试将提供有关管子膨胀能力的信息，并揭示表面缺陷。膨胀销测试可为研究和开发、工程设计、质量控制以及规范中的验收或拒收提供数据。 5.2 在某些产品规范中，规定了尺寸大于4英寸的管子的要求。（102 mm），试验方法中所述的试验 B968/B968M 可以作为替代品。

1.1 This test method establishes the requirements for the expansion pin test for copper and copper-alloy pipe and tubing with an inside diameter of 0.125 in. (3.2 mm) and greater or an outside diameter up to and including 4 in. (102 mm). Note 1: For tubes of sizes with an inside diameter less than 0.125 in. (3.2 mm), a substitute test method must be agreed upon between the manufacturer and purchaser. Note 2: For tubes of sizes greater than 4 in. (102 mm) in outside diameter, refer to B968/B968M for a test method. 1.2 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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. ====== Significance And Use ====== 5.1 When properly performed and interpreted, the expansion pin test will provide information with regard to the capacity of a tube for expansion and to reveal surface defects. The expansion pin test may provide data for research and development, engineering design, quality control, and acceptance or rejections in specifications. 5.2 In certain product specifications which establish requirements for tubes of sizes greater than 4 in. (102 mm), the test described in Test Method B968/B968M may be allowed as a substitute.