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เหล็กท่อดำ

Category
Nominal Dimension Outside Diameter Thickness Weight       Sectional          Area cm²
(mm) (in) d(mm) t(mm) kg/m kg/6m
15 1/2″ 21.7 2.0 0.97 5.83 1.24
20 3/4″ 27.2 2.0 1.24 7.44 1.58
2.3 1.41 8.46 1.80
25 1″ 34 2.3 1.80 10.80 2.29
32 1-1/4″ 42.7 2.3 2.29 13.74 2.92
2.5 2.48 14.88 3.16
40 1-1/2″ 48.6 2.3 2.63 15.78 3.34
2.5 2.84 17.04 3.62
2.8 3.16 18.96 4.03
3.2 3.58 21.48 4.56
50 2″ 60.5 2.3 3.30 19.80 4.20
3.2 4.52 27.12 5.76
4.0 5.57 33.42 7.10
65 2-1/2″ 76.3 2.8 5.08 30.48 6.46
3.2 5.77 34.62 7.35
4.0 7.19 42.78 9.08
80 3″ 89.1 2.8 5.96 35.76 7.59
3.2 6.78 40.68 8.64
90 3-1/2″ 101.6 3.2 7.76 46.56 9.89
4.0 9.63 57.78 12.26
5.0 11.90 71.4 15.17
100 4″ 114.3 3.2 8.77 52.62 11.17
3.5 9.58 57.48 12.18
4.5 12.20 73.2 15.52
125 5″ 139.8 3.6 12.10 72.6 15.40
4.0 13.40 80.40 17.07
4.5 15.02 90.12 19.13
6.0 19.80 118.80 25.22
150 6″ 165.2 4.5 17.80 106.80 22.72
5.0 19.80 118.80 25.16
6.0 23.60 141.60 30.01
7.1 27.70 166.20 35.26