标准摘要
[中文适用范围]： 本文件规定了用于连接沟槽钢管、管道、沟槽端部配件和其他公称直径不超过 300 DN 的沟槽端部部件的接头的性能要求、沟槽尺寸、测试方法和标记要求。 [外文原描述]： This document specifies performance requirements, grooving dimensions, test methods and marking requirements for couplings used in the joining of grooved steel tubes, pipes, grooved-end fittings and other grooved-end components up to 300 DN nominal diameter.
英文名称Fire protection — Automatic sprinkler systems — Part 12: Requirements and test methods for grooved-end components for steel pipe systems