规范7HU2

[中文适用范围]： 本标准规定了石油和天然气工业中使用的锤击式接头部件和组件的尺寸和功能互换性、设计、材料、检验、标记、存储和运输的最低要求。 本标准不涉及锤击式接头与其他部件连接的方式（即整体式、焊接或螺纹）。 本标准的适用性仅限于以下锤击式接头的图号、公称尺寸、温度和使用条件： - 图号：602、1002和1502 - 公称尺寸：1英寸、1.5英寸、2英寸、3英寸和4英寸 - 图号：2002和2202 - 公称尺寸：2英寸和3英寸 - 温度范围：-75°F至250°F（-60°C至121°C） - 使用条件：标准服务和酸性服务 本标准仅适用于不打算绝缘、埋设或直接暴露于大气中的地面安装。 [外文原描述]： API’s Specification (Spec) 7HU2, Oilfield Hammer Unions, 1st edition, is a global safety standard to address the incompatibility of hammer union components, a common issue in the industry that has led to equipment mismatching incidents. Its application will serve to improve operations through interoperability of a field proven standard design. This standard specifies minimum requirements for the dimensional and functional interchangeability, design, materials, inspection, marking, storing, and shipment of hammer union parts and assemblies for use in the petroleum and natural gas industries. Spec 7HU2 is a manufacturing standard that builds on API Recommended Practice 7HU1, Safe Use of 2-inch Hammer Unions for Oilfield Applications, with input from a balanced committee including representatives from global operators, manufacturers, service and supply organizations and trade associations.