GB/T25863-20105.2.1凸缘法兰连接图1凸缘法兰连接标注示意图表1凸缘法兰连接元件的规格和尺寸单位为毫米管外径D管长度L法兰直径D法兰凸台D法兰厚度B规允许允许壁厚S允许允许尺寸允许尺寸尺寸尺寸尺寸偏差偏差偏差偏差偏差Fa-30-2502502.0Fa-30-5005002.0Fa-30-750301.07503.00.6-1.4421.0321.040.5Fa-30-10001000士3.0Fa-30-150015004.0Fa-50-2502502.0Fa-50-5005002.0Fa-50-750501.27503.01.4-2.221.0521.050.5F-50-100010003.0Fm-50-15001500士4.0Fa-60-2502502.0Fa-60-5005002.0Fa-60-750601.27503.01.42.2721.0621.050.5Fa-60-100010003.0Fa-60-15001500士4.0Fa-70-2502502.0Fa-70-5005002.0Fa-70-7501.57503.01.4-2.6821.0721.00.5Fa-70-100010003.0Fa-70-150015004.05.2.2平法兰连接4X图2平法兰连接标注示意图3
