1.1 本规程描述了在但不限于现场环境中通过热熔连接与聚乙烯（PE）管和配件连接的程序。其他合适的热熔连接工艺可从各种来源获得，包括管道和配件制造商。本规程并不旨在解决所有可能的热熔连接程序，也不排除使用其他方开发的合格程序，这些程序已被证明可以生产可靠的热熔接头。 1.2 这些参数和程序仅适用于连接相关聚合物化学的聚乙烯管和配件。根据规范，它们适用于PE燃料气管 D2513 以及按照规范制造的PE饮用水、下水道和工业管道 F714 ，规格 D3035 以及AWWA C901和C906。咨询管道制造商，确保他们批准此连接管道的程序（参见 附录X1 ). 注1: 第节所示的参数和程序 8. 程序2——对接熔合，是使用塑料管协会（PPI）TR-33中记录的测试开发和验证的。第节所示的参数和程序 9 程序3--鞍座融合是使用PPI TR-41中记录的测试开发和验证的。 注2: 塑料管道协会（PPI）TR-33和TR-41中提供了有关具有相关聚合物化学性质的聚乙烯管和配件的信息。 1.3 使用本规程中描述的连接技术时，要求在现行ASTM规范中给出的尺寸公差范围内的零件在聚乙烯管和配件之间产生良好的接头。 1.4 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.5 本规程的文本引用了提供解释性材料的注释、脚注和附录。这些注释和脚注（不包括表格和图表中的注释和脚注）不应被视为本规程的要求。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 4.1 第节中描述的程序 7 – 9 主要用于（但不限于）使用合适的设备和适当的环境控制程序现场连接聚乙烯（PE）管和配件。如果实施得当，会产生强大的压力/防漏接头。当对这些接头进行破坏性测试时，故障发生在熔合区域之外。 4.2 熔体特性、平均分子量和分子量分布是确定合适熔融参数的影响因素；因此，在使用或开发特定的融合程序时，请考虑制造商的说明。请参阅 附件A1 . 4.3 本规程中的承插熔化、对接熔化和鞍形熔化程序适用于连接根据ASTM、AWWA、API和ISO等组织的PE产品规范制造的PE气体管道和配件、PE水管和配件以及PE通用管道和配件，这些管道和配件用于压力、低压和非- 压力应用。对于气体应用，需要根据具有管辖权的机构的规定，通过测试使用该程序制成的接头来对程序进行资格认证。

1.1 This practice describes procedures for making joints with polyethylene (PE) pipe and fittings by means of heat fusion joining in, but not limited to, a field environment. Other suitable heat fusion joining procedures are available from various sources including pipe and fitting manufacturers. This practice does not purport to address all possible heat fusion joining procedures, or to preclude the use of qualified procedures developed by other parties that have been proved to produce reliable heat fusion joints. 1.2 The parameters and procedures are applicable only to joining polyethylene pipe and fittings of related polymer chemistry. They are intended for PE fuel gas pipe in accordance with Specification D2513 and PE potable water, sewer and industrial pipe manufactured in accordance with Specification F714 , Specification D3035 , and AWWA C901 and C906. Consult with the pipe manufacturers to make sure they approve this procedure for the pipe to be joined (see Appendix X1 ). Note 1: The parameters and procedures shown for Section 8 . Procedure 2—Butt Fusion, were developed and validated using testing documented in Plastic Pipe Institute (PPI) TR-33. The parameters and procedures shown in Section 9 . Procedure 3— Saddle Fusion, were developed and validated using testing documented in PPI TR-41. Note 2: Information about polyethylene pipe and fittings that have related polymer chemistry is presented in Plastics Pipe Institute (PPI) TR-33 and TR-41. 1.3 Parts that are within the dimensional tolerances given in present ASTM specifications are required to produce sound joints between polyethylene pipe and fittings when using the joining techniques described in this practice. 1.4 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. 1.5 The text of this practice references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the practice. 1.6 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. 1.7 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. ====== Significance And Use ====== 4.1 The procedures described in Sections 7 – 9 are primarily intended for (but not limited to) field joining of polyethylene (PE) pipe and fittings, using suitable equipment and appropriate environmental control procedures. When properly implemented, strong pressure/leak-tight joints are produced. When these joints are destructively tested, the failure occurs outside the fusion joined area. 4.2 Melt characteristics, average molecular weight and molecular weight distribution are influential factors in establishing suitable fusion parameters; therefore, consider the manufacturer’s instructions in the use or development of a specific fusion procedure. See Annex A1 . 4.3 The socket fusion, butt fusion, and saddle fusion procedures in this practice are suitable for joining PE gas pipe and fittings, PE water pipe and fittings, and PE general purpose pipes and fittings made to PE product specifications from organizations such as ASTM, AWWA, API, and ISO that are used in pressure, low pressure and non-pressure applications. For gas applications, qualification of the procedure by testing joints made using the procedure in accordance with regulations from the authority having jurisdiction are required.