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< Structural Steel
  Mild Steel Flats (dimensions and kgms)
  Specification to BS EN 10025 S275
Width Wall Thickness mm
mm 3 5 6 8 10 12 15 20 25 30 40 50
10 .24  
13 .31 .51  
15 .35  
16 .39 .63 .75 .99 1.26  
20 .47 .79 .94 1.26 1.57 1.88  
25 .59 .98 1.18 1.57 1.96 2.36 2.94 3.93  
30 .71 1.18 1.41 1.88 2.36 2.83 3.53 4.71 5.89  
35 .82 1.37 1.65 2.25 2.75 3.30 4.21 5.50  
40 .94 1.57 1.88 2.51 3.14 3.77 4.71 6.28 7.85 9.42  
45 1.06 1.77 2.12 2.83 3.53 4.24 5.30 7.07 8.83 10.65  
50 1.18 1.96 2.36 3.15 3.93 4.71 5.89 7.85 9.81 11.78 15.70  
60 1.44 2.36 2.83 3.77 4.71 5.65 7.07 9.42 11.80 14.13 18.84  
65 1.53 2.55 3.06 4.08 5.10 6.12 7.65 10.20 12.80 15.31 20.40 25.52
70 1.65 2.75 3.30 4.40 5.50 6.59 8.24 11.00 13.70 16.49 21.96 27.48
75 1.77 2.97 3.53 4.71 5.89 7.07 8.83 11.80 14.70 17.66 23.61 29.44
80 1.89 3.14 3.77 5.02 6.28 7.54 9.42 12.60 15.70 18.80 25.10 31.40
90 2.12 3.53 4.24 5.65 7.07 8.48 10.60 14.10 17.70 21.22 28.26 35.33
100 2.36 3.93 4.71 6.28 7.85 9.42 11.80 15.70 19.60 23.60 31.40 39.3
110 2.59 4.32 5.18 6.91 8.65 10.40 12.95 17.30 21.60 25.89 34.54 43.18
120   4.71 5.65 7.54 9.42 11.30 14.10 18.80 23.60 28.35  
130 3.06 5.11 6.12 8.16 10.20 12.20 15.30 20.40 25.50 30.62 40.81 51.03
140   6.59 8.79 11.00 13.20 16.48 22.00 27.48 32.99  
150 3.54 5.88 7.07 9.42 11.80 14.10 17.70 23.60 29.40 35.33 47.11 58.88
160   7.54   12.56 15.07 18.84 25.12 31.41  
180   8.48 11.31 14.13 17.00 21.20 28.30 35.33 42.39 56.52 70.65
200   7.85 9.42 12.56 15.70 18.8 23.60 31.40 39.25 47.10 62.81 78.51
220   10.36 13.82 17.27 20.70 25.91 34.54 43.20 51.81 69.08 86.35
250   9.81 11.78 15.70 19.60 23.60 29.44 39.20 49.10 58.88 78.50 98.13
300   14.13 18.84 23.55 28.30 35.33 47.15 58.89 70.65 94.22 117.75
350   27.48 32.97 41.21 54.95 68.69 82.43 109.89  
400   31.4 37.68 47.10 62.81 78.51 94.21 125.61  
450   42.39 52.99 70.65 88.31  

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