1.1 本指南定义了要测量或计数的绝缘管道系统的组件，以确定单价合同或额外工作的数量和定价。 1.2 可以通过按管道尺寸、绝缘系统类型、绝缘厚度、双层或多层绝缘、防风雨或护套类型和压力额定值（如有必要）或通过组件（配件）系数或乘数对每个项目进行单价定价。 1.2.1 组件（配件）系数或乘数，即乘以管道直线长度的乘数，如所示 表1 ，确定不在本指南范围内的每个组件的相对价格。这些系数或乘数由绝缘承包商根据给定情况和绝缘系统规范确定。 1.2.2 建议在一个项目上只使用一种类型的定价。 1.2.3 以英寸-磅为单位的数值应视为标准值。 1.3 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。 ====意义和用途====== 5.1 本指南制定了程序，以帮助参与单价管道保温合同的各方就哪些部件将被计算用于定价达成协议。

1.1 This guide defines the components of an insulated piping system to be measured or counted to determine quantities and pricing for unit price contracts or extra work. 1.2 Pricing may be done through unit pricing for each item by pipe size, type of insulation system, insulation thickness, double or multilayer insulation, type of weatherproofing or jacketing, and pressure rating (if necessary) or through component (fitting) factor or multipliers. 1.2.1 Component (fitting) factors or multipliers, which are multipliers times the straight length of piping as shown in Table 1 , determine relative prices for each component not within the scope of this guide. These factors or multipliers are to be determined by the insulating contractor relative to the given situation and insulation system specification. 1.2.2 It is suggested that only one type of pricing be used on a project. 1.2.3 The values stated in inch-pound units are to be regarded as the standard. 1.3 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 This guide establishes procedures to help parties involved in unit price piping insulation contracts reach agreement as to what components will be counted for pricing purposes.