本文件包含定义、螺纹尺寸、参考数据（最小孔径）、支持信息（装配说明），并描述了EN 1254系列其他部分引用的试验方法。螺纹尺寸包括:配件螺纹部分的壁厚、旋转配件的尾管端部尺寸、气体接头尺寸、螺纹尺寸和螺纹轮廓。试验方法包括:内部静水压力下的密封性、内部气压下的密封性、装配配件体的完整性或具有“铸态”微观结构、金属管接头的抗拔性、金属管接头的抗振动性、接头的抗静态弯曲力、真空下接头的密封性、，接头耐温度循环、检测未压接头端部、耐应力腐蚀、检测铜接头表面的碳膜、测定平均脱锌深度、接头耐压力循环、断开和重新连接- 使用，确定毛细管端的直径和/或接合长度是否在规定公差范围内，确定具有成型凹槽的整体焊料或钎焊环形插座的最小接合长度。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document contains definitions, thread dimension, reference data (minimum bore), supporting information (assembling instructions) and describes the test methods referenced by other parts of the EN 1254 series.Thread dimensions comprise: wall thickness at threaded portions of fittings, dimensions of tail pipe ends for swivel fittings, dimensions of gas union connectors, thread dimensions and thread profile.Test methods comprise: leak tightness under internal hydrostatic pressure, leak tightness under internal pneumatic pressure, integrity of fabricated fitting bodies or having an 'as cast' microstructure, resistance to pull out of joints to metallic tubes, resistance of joints with metallic tube to vibration, resistance of joints to static flexural force, leak tightness of joints under vacuum, the resistance of joints to temperature cycling, detecting non-pressed fitting ends, resistance to stress corrosion, detection of a carbon film on the surface of copper fittings, determination of mean depth of dezincification, resistance of joints to pressure cycling, disconnection and re-use, determining if the diameter and/or the length of engagement of a capillary end is/are within the specified tolerance, determining the minimum length of engagement of an integral solder or brazing ring socket having a formed groove.All current amendments available at time of purchase are included with the purchase of this document.