序号 壁厚 δ 宽度Bmin 宽度Bmax 宽度Bmin 宽度Bmax 1 3.5 2.725 9.5 Bmin=1.15* δ-1.3 Bmax=1.4* δ+4.6 2 4 3.3 10.2 3 5 4.45 11.6 4 6 5.6 13 5 7 6.75 14.4 6 8 7.9 15.8 7 10 10.2 18.6 8 12 12.5 21.4 9 14 14.8 24.2 10 16 17.1 27 11 18 19.4 29.8 12 20 21.7 32.6 13 22 24 35.4 14 24 26.3 38.2 15 26 28.6 41 16 28 30.9 43.8 17 30 33.2 46.6 18 34 37.8 52.2 19 36 40.1 55 20 38 42.4 57.8 21 40 44.7 60.6 22 42 47 63.4 650±50