1.1 本规范规定了聚乙烯塑料模塑和挤压材料的识别方法，供应商和用户可以就不同商业批次或装运的可接受性达成一致。本规范中涉及的测试旨在提供根据所涵盖的组、类别和等级识别材料的信息。本规范的功能不是为设计目的提供特定工程数据。 1.2 用户和供应商应使用第节中给出的后缀，就识别对专业应用重要的特殊特性所需的其他要求达成一致 1.3 . 1.3 乙烯塑料是热塑性材料，可再加工和回收（见 注1 ). 本规范允许使用这些乙烯塑料材料，前提是满足生产商和最终用户的任何特定要求。 注1: 请参阅指南 D7209 有关再生塑料的信息和定义。 1.4 以国际单位制表示的数值视为标准值。 1.5 以下预防性警告仅适用于试验方法部分，第 12 ，符合本规范。 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。 1.6 有关塑料管材料的信息，请参阅规范 D3350 . 有关导线和电缆材料的信息，请参阅规范 D1248 . 注2: 没有已知的ISO等效于本标准。 1.7 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 provides for the identification of polyethylene plastics molding and extrusion materials in such a manner that the supplier and the user can agree on the acceptability of different commercial lots or shipments. The tests involved in this specification are intended to provide information for identifying materials in accordance with the groups, classes, and grades covered. It is not the function of this specification to provide specific engineering data for design purposes. 1.2 Other requirements necessary to identify particular characteristics important to specialized applications shall be agreed upon between the user and the supplier, by using the suffixes given in Section 1.3 . 1.3 Ethylene plastic materials, being thermoplastic, are reprocessable and recyclable (see Note 1 ). This specification allows for the use of those ethylene plastic materials, provided that any specific requirements as governed by the producer and the end user are met. Note 1: See Guide D7209 for information and definitions related to recycled plastics. 1.4 The values stated in SI units are regarded as standard. 1.5 The following precautionary caveat pertains to the test method portion only, Section 12 , 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. 1.6 For information regarding plastic pipe materials see Specification D3350 . For information regarding wire and cable materials, see Specification D1248 . Note 2: There is no known ISO equivalent to this standard. 1.7 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.