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Square Hollow Sections
 

Square Hollow Sections

Square Hollow Sections (SHS), commonly referred to as box sections, are square-profile steel members formed as hollow tubes. They are frequently used as columns or vertical supports, often fitted with base and cap plates to allow for secure fixing at both ends. SHS can also be utilised in beam-to-column arrangements, where connections are made to either side of the section. While they are not as widely used as universal beams or columns, they are a popular choice in projects where both structural performance and visual appearance are important, thanks to their clean, modern lines.

There are two primary manufacturing methods for SHS: cold-formed and hot-finished. Cold-formed sections are produced by shaping flat steel sheets into a square profile and welding along the seam where the edges meet. In contrast, hot-finished sections are formed at high temperatures during the rolling process, resulting in a more uniform structure and consistent strength throughout the section.

SHS sizes are typically expressed in a format such as 20 x 20 x 2. In this example, the first two measurements (20mm x 20mm) represent the equal width and depth of the square profile, while the final figure (2mm) indicates the wall thickness. This standardised sizing makes it easy to specify the appropriate section for a wide range of structural and architectural applications.

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Size Chart

Type Weight
[kg/m]		 Height
[mm]		 Width
[mm]		 Wall
thickness
[mm]
20 x 20 x 2 SHS 1,1 20 20 2
20 x 20 x 2.5 SHS 1,3 20 20 2,5
25 x 25 x 2 SHS 1,4 25 25 2
25 x 25 x 2.5 SHS 1,7 25 25 2,5
25 x 25 x 3 SHS 2,0 25 25 3
30 x 30 x 2 SHS 1,7 30 30 2
30 x 30 x 2.5 SHS 2,1 30 30 2,5
30 x 30 x 3 SHS 2,5 30 30 3
40 x 40 x 2.5 SHS 2,9 40 40 2,5
40 x 40 x 3 SHS 3,4 40 40 3
40 x 40 x 3.2 SHS 3,6 40 40 3,2
40 x 40 x 3.6 SHS 4,0 40 40 3,6
40 x 40 x 4 SHS 4,4 40 40 4
40 x 40 x 5 SHS 5,3 40 40 5
50 x 50 x 2.5 SHS 3,7 50 50 2,5
50 x 50 x 3 SHS 4,4 50 50 3
50 x 50 x 3.2 SHS 4,6 50 50 3,2
50 x 50 x 3.6 SHS 5,1 50 50 3,6
50 x 50 x 4 SHS 5,6 50 50 4
50 x 50 x 5 SHS 6,9 50 50 5
50 x 50 x 6 SHS 8,0 50 50 6
50 x 50 x 6.3 SHS 8,3 50 50 6,3
60 x 60 x 2.5 SHS 4,5 60 60 2,5
60 x 60 x 3 SHS 5,3 60 60 3
60 x 60 x 3.2 SHS 5,6 60 60 3,2
60 x 60 x 3.6 SHS 6,3 60 60 3,6
60 x 60 x 4 SHS 6,9 60 60 4
60 x 60 x 5 SHS 8,4 60 60 5
60 x 60 x 6 SHS 9,9 60 60 6
60 x 60 x 6.3 SHS 10,3 60 60 6,3
60 x 60 x 8 SHS 12,5 60 60 8
70 x 70 x 3 SHS 6,2 70 70 3
70 x 70 x 3.2 SHS 6,6 70 70 3,2
70 x 70 x 3.6 SHS 7,4 70 70 3,6
70 x 70 x 4 SHS 8,2 70 70 4
70 x 70 x 5 SHS 10,0 70 70 5
70 x 70 x 6 SHS 11,8 70 70 6
70 x 70 x 6.3 SHS 12,3 70 70 6,3
70 x 70 x 8 SHS 15,0 70 70 8
80 x 80 x 3 SHS 7,2 80 80 3
80 x 80 x 3.2 SHS 7,6 80 80 3,2
80 x 80 x 3.6 SHS 8,5 80 80 3,6
80 x 80 x 4 SHS 9,4 80 80 4
80 x 80 x 5 SHS 11,6 80 80 5
80 x 80 x 6 SHS 13,6 80 80 6
80 x 80 x 6.3 SHS 14,2 80 80 6,3
80 x 80 x 8 SHS 17.8 80 80 8
90 x 90 x 5 SHS 13,1 90 90 5
90 x 90 x 6 SHS 15,5 90 90 6
90 x 90 x 6.3 SHS 16,2 90 90 6,3
90 x 90 x 8 SHS 20,1 90 90 8
100 x 100 x 3.6 SHS 10,8 100 100 3,6
100 x 100 x 4 SHS 11,9 100 100 4
100 x 100 x 5 SHS 14,7 100 100 5
100 x 100 x 6 SHS 17,4 100 100 6
100 x 100 x 6.3 SHS 18,2 100 100 6,3
100 x 100 x 8 SHS 22,6 100 100 8
100 x 100 x 10 SHS 27,4 100 100 10
120 x 120 x 4 SHS 14,4 120 120 4
120 x 120 x 5 SHS 18,0 120 120 5
120 x 120 x 6 SHS 21,2 120 120 6
120 x 120 x 6.3 SHS 22,2 120 120 6,3
120 x 120 x 8 SHS 27,6 120 120 8
120 x 120 x 10 SHS 33,7 120 120 10
120 x 120 x 12 SHS 39,5 120 120 12
120 x 120 x 12.5 SHS 40,9 120 120 12,5
140 x 140 x 5 SHS 21,0 140 140 5
140 x 140 x 6 SHS 24,9 140 140 6
140 x 140 x 6.3 SHS 26,1 140 140 6,3
140 x 140 x 8 SHS 32,6 140 140 8
140 x 140 x 10 SHS 40,0 140 140 10
140 x 140 x 12 SHS 47,0 140 140 12
140 x 140 x 12.5 SHS 48,7 140 140 12,5
150 x 150 x 5 SHS 22,6 150 150 5
150 x 150 x 6 SHS 26,8 150 150 6
150 x 150 x 6.3 SHS 28,1 150 150 6,3
150 x 150 x 8 SHS 35,1 150 150 8
150 x 150 x 10 SHS 43,1 150 150 10
150 x 150 x 12 SHS 50,8 150 150 12
150 x 150 x 12.5 SHS 52,7 150 150 12,5
150 x 150 x 16 SHS 65,2 150 150 16
160 x 160 x 5 SHS 24,1 160 160 5
160 x 160 x 6 SHS 28,7 160 160 6
160 x 160 x 6.3 SHS 30,1 160 160 6,3
160 x 160 x 8 SHS 37,6 160 160 8
160 x 160 x 10 SHS 46,3 160 160 10
160 x 160 x 12 SHS 54,6 160 160 12
160 x 160 x 12.5 SHS 56,6 160 160 12,5
160 x 160 x 16 SHS 70,2 160 160 16
180 x 180 x 5 SHS 27,3 180 180 5
180 x 180 x 6 SHS 32,5 180 180 6
180 x 180 x 6.3 SHS 34,0 180 180 6,3
180 x 180 x 8 SHS 42,7 180 180 8
180 x 180 x 10 SHS 52,5 180 180 10
180 x 180 x 12 SHS 62,1 180 180 12
180 x 180 x 12.5 SHS 64,4 180 180 12,5
180 x 180 x 16 SHS 80,2 180 180 16
200 x 200 x 5 SHS 30,4 200 200 5
200 x 200 x 6 SHS 36,2 200 200 6
200 x 200 x 6.3 SHS 38,0 200 200 6,3
200 x 200 x 8 SHS 47,7 200 200 8
200 x 200 x 10 SHS 58,8 200 200 10
200 x 200 x 12 SHS 69,6 200 200 12
200 x 200 x 12.5 SHS 72,3 200 200 12,5
200 x 200 x 16 SHS 90,3 200 200 16
220 x 220 x 6 SHS 40,0 220 220 6
220 x 220 x 6.3 SHS 41,9 220 220 6,3
220 x 220 x 8 SHS 52,7 220 220 8
220 x 220 x 10 SHS 65,1 220 220 10
220 x 220 x 12 SHS 77,2 220 220 12
220 x 220 x 12.5 SHS 80,1 220 220 12,5
220 x 220 x 16 SHS 100,0 220 220 16
250 x 250 x 5 SHS 38,3 250 250 5
250 x 250 x 6 SHS 45,7 250 250 6
250 x 250 x 6.3 SHS 47,9 250 250 6,3
250 x 250 x 8 SHS 60,3 250 250 8
250 x 250 x 10 SHS 74,5 250 250 10
250 x 250 x 12 SHS 88,5 250 250 12
250 x 250 x 12.5 SHS 91,9 250 250 12,5
250 x 250 x 16 SHS 115,0 250 250 16
260 x 260 x 6 SHS 47,6 260 260 6
260 x 260 x 6.3 SHS 49,9 260 260 6,3
260 x 260 x 8 SHS 62,8 260 260 8
260 x 260 x 10 SHS 77,7 260 260 10
260 x 260 x 12 SHS 92,2 260 260 12
260 x 260 x 12.5 SHS 95,8 260 260 12,5
260 x 260 x 16 SHS 120,0 260 260 16
300 x 300 x 6 SHS 55,1 300 300 6
300 x 300 x 6.3 SHS 57,8 300 300 6,3
300 x 300 x 8 SHS 72,8 300 300 8
300 x 300 x 10 SHS 90,2 300 300 10
300 x 300 x 12 SHS 107,0 300 300 12
300 x 300 x 12.5 SHS 112,0 300 300 12,5
300 x 300 x 16 SHS 141,0 300 300 16
350 x 350 x 8 SHS 85,4 350 350 8
350 x 350 x 10 SHS 106,0 350 350 10
350 x 350 x 12 SHS 126,0 350 350 12
350 x 350 x 12.5 SHS 131,0 350 350 12,5
350 x 350 x 16 SHS 166,0 350 350 16
400 x 400 x 8 SHS 97,9 400 400 8
400 x 400 x 10 SHS 122,0 400 400 10
400 x 400 x 12 SHS 145,0 400 400 12
400 x 400 x 12.5 SHS 151,0 400 400 12,5
400 x 400 x 16 SHS 191,0 400 400 16
400 x 400 x 20 SHS 235,0 400 400 20
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