1.1 本规范规定了由UNS C12200号铜管生产的无缝铜管（DWV）的要求，用于卫生排水、废物和通风管道。 注1: ASME标准B16.23和B16.29以及CSA标准B158.1中描述了排水、废水或通风系统中用于焊接或钎焊连接的配件。 注2: 实践中描述了通过焊接组装铜排水、废物和通风系统 B828 . 注3: 规范中描述了连接铜排水、废物或通风系统的焊料 B32 . 规范中描述了这些系统的可接受通量要求 B813 . 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 以下危险声明仅适用于本规范中所述的试验方法: 1.3.1 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====== 17.1 为了确定是否符合下表所列特性要求和尺寸公差的规定限值，应按照实践中的舍入方法对观察值或计算值进行舍入 E29年 : 所有物 观察到的或 计算值 化学成分 最近的单位位于 硬度 规定限值的数字 抗拉强度 最近ksi（5 MPa）

1.1 This specification establishes the requirements for seamless copper tube (DWV) produced from Copper UNS No. C12200 and intended for sanitary drainage, waste, and vent piping. Note 1: Fittings used for soldered or brazed connections in drainage, waste, or vent systems are described in ASME Standards B16.23 and B16.29 and CSA Standard B158.1. Note 2: The assembly of copper drainage, waste, and vent systems by soldering is described in Practice B828 . Note 3: Solders for joining copper drainage, waste, or vent systems are described in Specification B32 . The requirement for acceptable fluxes for these systems are described in Specification B813 . 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 The following hazard statement pertains only to the test method(s) described in this specification: 1.3.1 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 ====== 17.1 For the purpose of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29 : Property Rounded Unit for Observed or Calculated Value Chemical composition nearest unit in the last right-hand place of Hardness figures of the specified limit Tensile strength nearest ksi (5 MPa)