1.1 本规范规定了安装前用于输送污水、工业废物和雨水的超强度和标准强度陶土管和配件的验收标准；以及超强度多孔和标准强度多孔陶土管，用于地下排水、过滤场、浸出场和类似地下排水设施。 1.2 以英寸-磅单位表示的数值视为标准值。括号中给出的值是数学转换为SI单位，仅供参考，不被视为标准单位。 注1: 请注意规范 C425型 ，试验方法 C828号 ，试验方法 1091元 ，试验方法 C301号 、和术语 C896号 . 1.3 以下预防性警告仅适用于试验方法部分， 5.2 – 5.2.3.2 本标准中: 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。

1.1 This specification establishes the criteria for acceptance, prior to installation, of extra strength and standard strength vitrified clay pipe and fittings to be used for the conveyance of sewage, industrial wastes, and storm water; and extra strength perforated and standard strength perforated vitrified clay pipe to be used for underdrainage, filter fields, leaching fields, and similar subdrainage installations. 1.2 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. Note 1: Attention is called to Specification C425 , Test Method C828 , Test Method C1091 , Test Methods C301 , and Terminology C896 . 1.3 The following precautionary caveat pertains only to the Test Method portion, 5.2 – 5.2.3.2 of this standard: 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.