DN 外径 mm SCH5s SCH10s SCH20s SCH20 SCH30 SCH40s SCH40 SCH60 SCH80s SCH80 SCH100 SCH120 SCH140 SCH160 XXS mm mm mm mm mm mm mm mm mm kg/m mm mm mm kg/m mm mm mm 10 17 1.2 1.6 2.0 2.5 2.5 3.2 3.5 15 22 1.6 2.0 2.5 3.0 3.0 4.0 4.0 5.0 7.5 20 27 1.6 2.0 2.5 3.0 3.0 4.0 4.0 5.5 8.0 25 34 1.6 2.8 3.0 3.5 3.5 4.5 4.5 6.5 9.0 (32) 42 1.6 2.8 3.0 3.5 3.5 5.0 5.0 6.5 10.0 40 48 1.6 2.8 3.0 4.0 4.0 5.0