Dimensions - Cold-Formed Rectangular Hollow Sections

Welcome to our Cold-Formed Rectangular Hollow Section dimensions page! Here you'll find dimensions for all UK Cold-Formed Rectangular Hollow Section steel sections described by the Steelwork Design Guide to BS5950-1:2000, Volume 1, Section Properties, Member Capacities, 7th Edition (also known as The Blue Book). Sort the table below according to any property and select a CAD file to download using the reference links in the left-most column.

You can also purchase all our CAD data in one easy download, containing the shapes as individual files or AutoCAD Design Center files! Click here to visit our Shop.

Section Reference Depth of Section Width of Section Thickness Mass per Metre Area of Section
  D
mm
B
mm
t
mm
kg/m A
cm2
50x25x2.0 50 25 2 2.15 2.74
50x25x3.0 50 25 3 3.07 3.91
50x30x2.5 50 30 2.5 2.82 3.59
50x30x3.0 50 30 3 3.3 4.21
50x30x4.0 50 30 4 4.2 5.35
60x30x3.0 60 30 3 3.77 4.81
60x30x4.0 60 30 4 4.83 6.15
60x40x3.0 60 40 3 4.25 5.41
60x40x4.0 60 40 4 5.45 6.95
60x40x5.0 60 40 5 6.56 8.36
70x40x3.0 70 40 3 4.72 6.01
70x40x4.0 70 40 4 6.08 7.75
70x50x3.0 70 50 3 5.19 6.61
70x50x4.0 70 50 4 6.71 8.55
80x40x3.0 80 40 3 5.19 6.61
80x40x4.0 80 40 4 6.71 8.55
80x40x5.0 80 40 5 8.13 10.4
80x50x3.0 80 50 3 5.66 7.21
80x50x4.0 80 50 4 7.34 9.35
80x50x5.0 80 50 5 8.91 11.4
80x60x3.0 80 60 3 6.13 7.81
80x60x4.0 80 60 4 7.97 10.1
80x60x5.0 80 60 5 9.7 12.4
90x50x3.0 90 50 3 6.13 7.81
90x50x4.0 90 50 4 7.97 10.1
90x50x5.0 90 50 5 9.7 12.4
100x40x3.0 100 40 3 6.13 7.81
100x40x4.0 100 40 4 7.97 10.1
100x40x5.0 100 40 5 9.7 12.4
100x50x3.0 100 50 3 6.6 8.41
100x50x4.0 100 50 4 8.59 10.9
100x50x5.0 100 50 5 10.5 13.4
100x50x6.0 100 50 6 12.3 15.6
100x60x3.0 100 60 3 7.07 9.01
100x60x3.5 100 60 3.5 8.16 10.4
100x60x4.0 100 60 4 9.22 11.7
100x60x5.0 100 60 5 11.3 14.4
100x60x6.0 100 60 6 13.2 16.8
100x80x3.0 100 80 3 8.01 10.2
100x80x4.0 100 80 4 10.5 13.3
100x80x5.0 100 80 5 12.8 16.4
120x40x3.0 120 40 3 7.07 9.01
120x40x4.0 120 40 4 9.22 11.7
120x40x5.0 120 40 5 11.3 14.4
120x60x3.0 120 60 3 8.01 10.2
120x60x3.5 120 60 3.5 9.26 11.8
120x60x4.0 120 60 4 10.5 13.3
120x60x5.0 120 60 5 12.8 16.4
120x60x6.0 120 60 6 15.1 19.2
120x80x4.0 120 80 4 11.7 14.9
120x80x5.0 120 80 5 14.4 18.4
120x80x6.0 120 80 6 17 21.6
120x80x8.0 120 80 8 21.4 27.2
140x80x3.0 140 80 3 9.9 12.6
140x80x4.0 140 80 4 13 16.5
140x80x5.0 140 80 5 16 20.4
140x80x6.0 140 80 6 18.9 24
140x80x8.0 140 80 8 23.9 30.4
140x80x10.0 140 80 10 28.7 36.6
150x100x3.0 150 100 3 11.3 14.4
150x100x4.0 150 100 4 14.9 18.9
150x100x5.0 150 100 5 18.3 23.4
150x100x6.0 150 100 6 21.7 27.6
150x100x8.0 150 100 8 27.7 35.2
150x100x10.0 150 100 10 33.4 42.6
160x80x4.0 160 80 4 14.2 18.1
160x80x5.0 160 80 5 17.5 22.4
160x80x6.0 160 80 6 20.7 26.4
160x80x8.0 160 80 8 26.4 33.6
180x80x4.0 180 80 4 15.5 19.7
180x80x5.0 180 80 5 19.1 24.4
180x80x6.0 180 80 6 22.6 28.8
180x80x8.0 180 80 8 28.9 36.8
180x80x10.0 180 80 10 35 44.6
180x100x4.0 180 100 4 16.8 21.3
180x100x5.0 180 100 5 20.7 26.4
180x100x6.0 180 100 6 24.5 31.2
180x100x8.0 180 100 8 31.4 40
180x100x10.0 180 100 10 38.1 48.6
200x100x4.0 200 100 4 18 22.9
200x100x5.0 200 100 5 22.3 28.4
200x100x6.0 200 100 6 26.4 33.6
200x100x8.0 200 100 8 33.9 43.2
200x100x10.0 200 100 10 41.3 52.6
200x120x4.0 200 120 4 19.3 24.5
200x120x5.0 200 120 5 23.8 30.4
200x120x6.0 200 120 6 28.3 36
200x120x8.0 200 120 8 36.5 46.4
200x120x10.0 200 120 10 44.4 56.6
200x150x4.0 200 150 4 21.2 26.9
200x150x5.0 200 150 5 26.2 33.4
200x150x6.0 200 150 6 31.1 39.6
200x150x8.0 200 150 8 40.2 51.2
200x150x10.0 200 150 10 49.1 62.6
250x150x5.0 250 150 5 30.1 38.4
250x150x6.0 250 150 6 35.8 45.6
250x150x8.0 250 150 8 46.5 59.2
250x150x10.0 250 150 10 57 72.6
250x150x12.0 250 150 12 66 84.1
250x150x12.5 250 150 12.5 68.3 87
300x100x6.0 300 100 6 35.8 45.6
300x100x8.0 300 100 8 46.5 59.2
300x100x10.0 300 100 10 57 72.6
300x100x12.5 300 100 12.5 68.3 87
300x200x6.0 300 200 6 45.2 57.6
300x200x8.0 300 200 8 59.1 75.2
300x200x10.0 300 200 10 72.7 92.6
300x200x12.0 300 200 12 84.8 108
300x200x12.5 300 200 12.5 88 112
400x200x8.0 400 200 8 71.6 91.2
400x200x10.0 400 200 10 88.4 113
400x200x12.0 400 200 12 104 132
400x200x12.5 400 200 12.5 108 137
450x250x8.0 450 250 8 84.2 107
450x250x10.0 450 250 10 104 133
450x250x12.0 450 250 12 123 156
450x250x12.5 450 250 12.5 127 162
500x300x8.0 500 300 8 96.7 123
500x300x10.0 500 300 10 120 153
500x300x12.0 500 300 12 141 180
500x300x12.5 500 300 12.5 147 187