标厚 0.4 0.5 0.6 0.7 0.8 0.9 1 1.2 1.5 2 2.5 3 标厚 0.4 0.5 0.6 0.7 0.8 0.9 1 1.2 1.5 2 2.5 3 9.5 0.34 0.4 0.43 0.56 0.68 0.8 0.91 1.13 10*10 0.44 0.53 0.58 0.75 0.92 12.7 0.45 0.54 0.58 0.75 0.92 1.08 1.24 1.53 12*12 0.54 0.64 0.71 0.91 1.12 1.32 1.52 15.9 0.57 0.69 0.75 0.97 1.18 1.4 1.61 2.02 15*15 0.68 0.81 0.89 1.16 1.42 1.69 1.95 19.1 0.69 0.82 0.9 1.17 1.42 1.68 1.94 2.42 19*19 0.87 1.04 1.15 1
12.7 √ √ √ √ √ √ √ 15.9 √ √ √ √ √ √ √ 19.0 √ √ √ √ √ √ √ √ 22.2 √ √ √ √ √ √ √ √ 25.4 √ √ √ √ √ √ √ √ 28.5 √ √ √ √ √ √ √ √ 31.8 √ √ √ √ √ √ √ √ √ √ 34.0 √ √ √ √ 38.1 √ √ √ √ √ √ √ √ √ √ 41.3 √ √ √ √ √ √ 42.7 √ √ √ √ 45.0 √ √ √ √ √ 48.6 √ √ √ √ 50.8 √ √ √ √ √ √ √ 57.0 √ √ √ √ √ √ 63.5 √ √ √ √ √ √ √ 76.2 √ √ √ √ √ √ √ 88.9 √ √ √ √ √ √ √ 101.6 √ √ √ √ √ 108.0 √ √ √ √ √ 114.3 √ √ √ √ √ 127.0 √ √ √ √ 13