螺纹活接头		承插活接头
Threaded Union		Socket Union
公称通径 Nominal Diameter 外径 壁厚 承插孔径 流通孔径 承插孔深度 公称装配长度 Dmin Cmin d1 d2 min L A B(in) 承插焊 Socket 螺纹 Threaded 承插焊 Socket 螺纹 Threaded 承插焊 Socket 承插焊、螺纹 Socket & Threaded 承插焊 Socket 承插焊、螺纹 Socket & Threaded 6 1/8 21.8 14.7 3.2 2.5 10.65 6.43 10 41.4 8 1/4 21.8 19.0 3.3 3.1 14.10 9.45 10 41.4 10 3/8 25.9 22.9 3.5 3.2 17.55 13.51 10 46.0 15 1/2 31.2 27.7 4.1 3.8 21.70 17.07 10 49.0 20 3/4 37.1 33.5 4.3 4.0 27.05 21.39 13 56.9 25 1 45.5 41.4 5.0 4.6 33.80 27.74 13 62.0 32 11/4 54.9 50.5 5.3 4.9 42.55 35.36 13 71.1 40 11/2 61.5 57.2 5.6 5.1 48.65 41.20 13 76.5 50 2 75.2 70.1 6.1 5.6 61.10 52.12 16 86.1 65 21/2 91.7 85.3 7.7 7.1 73.80 64.31 16 102.4 80 3 109.2 102.4 8.4 7.7 89.80 77.27 16 109.0 注：上述尺寸符合MSS SP-83、BS3799标准 Above dimensions acc.to MSS SP-83、BS3799