1.1 本分类系统标准涵盖了硬质PVC和CPVC化合物，用于挤压或模制形式的一般用途，包括配件以及由聚氯乙烯、氯化聚氯乙烯或含有至少80%的氯乙烯共聚物组成的压力和非压力管道应用 % 氯乙烯和必要的复合成分。复合成分应包括润滑剂、稳定剂、非聚氯乙烯树脂改性剂、颜料和无机填料。 注1: 为特定最终用途或应用选择特定化合物需要考虑其他特性，如热特性、光学特性、耐候性等。这些特性的具体要求和测试方法应由买方和卖方共同商定。 注2: 压力管道应用中化合物的选择需要考虑确定压力额定值所需的材料应力额定值，但本规范中未提及。长期要求- 符合公认应力等级标准的长期材料应力等级，如符合试验方法的HDB D2837 对于压力管道，应包含在压力管道产品或系统的规范中。 注3: 配方成分列表 1.1 这并不是一份详尽的允许复合成分清单。除列出的配料外，还可以使用其他配料。配方成分列表 1.1 并不意味着列出的每种成分都是必需成分。某些化合物可能不包含中列出的所有成分 1.1 . 1.2 有关涉及特殊耐化学性的应用，请参见分类 D5260 . 1.3 本分类系统标准中的要求旨在对用于制造成品的化合物进行质量控制。这些特性基于使用在规定条件下测试的标准试样获得的数据。它们不直接适用于成品。有关成品的要求，请参阅适用的ASTM标准。 1.4 本分类系统标准的文本参考了提供解释材料的注释和脚注。 这些注释和脚注（不包括表和图中的注释和脚注）不应视为本规范的要求。 1.5 一些硬质PVC应用可以选择包含符合本分类系统标准要求的回收PVC塑料。请参阅适用产品标准“材料和制造”一节中的具体要求。 1.6 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.7 以下安全危险警告仅适用于测试方法部分第节 11 ，本规范: 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。 注4: 本规范的内容与ISO 1163-1:1985和ISO 1163-2:1980相似（但技术上不等同）。 1.8 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 classification system standard covers rigid PVC and CPVC compounds intended for general purpose use in extruded or molded form—including fittings and both pressure and nonpressure piping applications—composed of poly(vinyl chloride), chlorinated poly(vinyl chloride), or vinyl chloride copolymers containing at least 80 % vinyl chloride, and the necessary compounding ingredients. The compounding ingredients shall be permitted to consist of lubricants, stabilizers, non-poly(vinyl chloride) resin modifiers, pigments, and inorganic fillers. Note 1: Selection of specific compounds for particular end uses or applications requires consideration of other characteristics such as thermal properties, optical properties, weather resistance, etc. Specific requirements and test methods for these properties should be by mutual agreement between the purchaser and the seller. Note 2: Selection of compounds for pressure piping applications requires consideration of material stress ratings that are required for determining pressure ratings, but are not addressed in this specification. Requirements for long-term material stress ratings in accordance with recognized stress rating standards, such as HDB in accordance with Test Method D2837 for pressure piping, should be included in specifications for pressure piping products or systems. Note 3: The list of compounding ingredients in 1.1 is not meant to be an exhaustive list of allowable compound ingredients. In addition to the compounding ingredients listed, others may also be used. The list of compounding ingredients in 1.1 does not imply that every ingredient listed is a required ingredient. Some compounds may not contain all the ingredients listed in 1.1 . 1.2 For applications involving special chemical resistance see Classification D5260 . 1.3 The requirements in this classification system standard are intended for the quality control of compounds used to manufacture finished products. These properties are based on data obtained using standard test specimens tested under specified conditions. They are not directly applicable to finished products. See the applicable ASTM standards for requirements for finished products. 1.4 The text of this classification system standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this specification. 1.5 Some rigid PVC applications have the option to contain recycled PVC plastics that meet the requirements of this classification system standard. Refer to the specific requirements in the materials and manufacture section of the applicable product standard. 1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.7 The following safety hazards caveat pertains only to the test methods portion, Section 11 , of this specification: 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. Note 4: This specification is similar in content (but not technically equivalent) to ISO 1163-1:1985 and ISO 1163-2:1980. 1.8 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.