1.1 本实施例描述了在但不限于现场环境中通过热熔合连接制造具有额定压力聚丙烯(PP)管道和配件的接头的程序。本标准并不旨在解决所有可能的热熔合连接程序或排除使用由其他方开发的已被证明可产生可靠的热熔合接头的合格程序。 1.2 这些参数和程序仅适用于连接PP管道和相关聚合物化学配件，所述PP管道和配件是实心壁、本质上是整体的或本质上是包含一层或多层PP基增强材料的多层的。它们适用于按照规范制造的PP管和配件 F2389 、CSA B137.11或ISO 15874。请咨询管道制造商，确保他们批准要连接的管道和配件的此程序。附注1: 本规范中显示的参数和程序与DVS德国焊接协会技术规范2207-11中提供的参数和程序一致。 1.3 当使用本规范中描述的连接技术时，要求在当前ASTM、CSA或ISO规范中给出的尺寸公差范围内的零件在聚丙烯管道和配件之间产生良好的连接。 1.4 以SI单位或英寸-磅单位表示的值应单独视为标准值。每个系统中陈述的值不一定完全等同；因此，为确保符合标准，每个系统应独立使用，两个系统的数值不得合并使用。括号中给出的值是数学转换，可能不完全等同于国际单位制单位或英寸-英镑单位，仅供参考。 1.5 本实践的文本引用了提供解释材料的注释、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）不应被视为惯例的要求。 1.6 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（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》中确立的国际公认的标准化原则制定的。======意义和用途====== 5.1 本实施规程中描述的程序旨在使用合适的设备和合适的环境控制程序连接聚丙烯（PP）管道和配件。当正确实施时，会产生坚固的防漏接头。 5.2 熔体流动特性、平均分子量和分子量分布是建立合适的熔融参数的影响因素。因此，在使用或开发特定融合程序时，应考虑制造商的说明。 5.3 本实施规程中的承插熔合、对接熔合、侧壁熔合和电熔合程序适用于连接额定压力的PP管道和按照中列出的PP产品规格制造的配件 1.2 用于额定压力的热水和冷水分配应用、供水管线、建筑供应管线、循环加热和冷却、冷冻水、工业和灌溉系统。

1.1 This practice describes procedures for making joints with pressure-rated polypropylene (PP) pipe and fittings by means of heat fusion joining in, but not limited to, a field environment. This standard 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 proven to produce reliable heat fusion joints. 1.2 The parameters and procedures are applicable only to joining PP pipe and fittings of related polymer chemistry that is either solid wall, monolithic in nature, or multilayer in nature containing one or more layers of PP-based reinforcement. They are intended for PP pipe and fittings manufactured in accordance with Specification F2389 , CSA B137.11, or ISO 15874. Consult with the pipe manufacturer to make sure they approve this procedure for the pipe and fittings to be joined. Note 1: The parameters and procedures shown within this practice are consistent with the parameters and procedures provided in DVS German Welding Society Technical Code 2207-11. 1.3 Parts that are within the dimensional tolerances given in current ASTM, CSA, or ISO specifications are required to produce sound joints between polypropylene pipe and fittings when using the joining techniques described in this practice. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. The values given in parentheses are mathematical conversions that may not be exact equivalents to either SI units or inch-pound units and that are provided for information only. 1.5 The text of this practice references notes, footnotes, and appendices 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 ====== 5.1 The procedures described in this practice are intended for joining of polypropylene (PP) pipe and fittings using suitable equipment and appropriate environmental control procedures. When properly implemented, strong leak-tight joints are produced. 5.2 Melt flow 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. 5.3 The socket fusion, butt fusion, sidewall fusion, and electrofusion procedures in this practice are suitable for joining pressure-rated PP pipe and fittings made to PP product specifications listed in 1.2 that are used in pressure-rated hot and cold-water distribution applications, water service line, building supply lines, hydronic heating and cooling, chilled water, industrial, and irrigation systems.