1、奥氏体不锈钢无缝钢管的尺寸和理论质量公称直径DN外径mm壁厚及理论质量SCH5s SCH10s SCH20s SCH40s SCH80smm kg/m mm kg/m mm kg/m mm kg/m mm kg/m10 17 1.2 0.47 1.6 0.62 2.0 0.75 2.5 0.91 3.2 1.1115 22 1.6 0.82 2.0 1.00 2.5 1.22 3.0 1.43 4.0 1.8020 27 1.6 1.02 2.0 1.25 2.5 1.53 3.0 1.80 4.0 2.3025 34 1.6 1.30 2.8 2.19 3.0 2.33 3.5 2.67 4
2、.5 3.32(32) 42 1.6 1.62 2.8 2.75 3.0 2.93 3.5 3.37 5.0 4.6340 48 1.6 1.86 2.8 3.17 3.0 3.38 4.0 4.41 5.0 5.3850 60 1.6 2.34 2.8 4.01 3.5 4.95 4.0 5.61 5.5 7.50(65) 76 2.0 3.70 3.0 5.48 3.5 6.35 5.0 8.89 7.0 12.0980 89 2.0 4.36 3.0 6.46 4.0 8.51 5.5 11.50 7.5 15.30100 114 2.0 5.61 3.0 8.33 4.0 11.01
3、6.0 16.22 8.5 22.45(125) 140 2.8 9.62 3.5 11.96 5.0 16.90 6.5 21.72 9.5 31.03150 168 2.8 11.58 3.5 14.41 5.0 20.40 7.0 28.21 11.0 43.23200 219 2.8 15.15 4.0 21.53 6.5 34.57 8.0 42.25 13.0 67.03250 273 3.5 23.61 4.0 26.93 6.5 43.36 9.5 62.66 15.0 96.87300 325 4.0 32.13 4.5 36.10 6.5 51.82 9.5 75.02 17.0 131.06350 356 4.0 35.24 5.0 43.93400 406 4.5 45.22 5.0 50.18注：公称壁厚超过SCH80s的不锈钢钢管按 （碳素钢、合金钢无缝钢管的尺寸选取）
