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High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
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The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
In the world of construction, manufacturing, and structural design, rectangular steel pipes play a vital role thanks to their strength, versatility, and clean geometric lines. Whether you're building a structural frame, reinforcing a wall system, or fabricating machinery, selecting the right standard size is crucial for performance, cost-efficiency, and safety.
But what exactly are the standard sizes for rectangular pipes? In this article, we’ll show the standard sizes for rectangular pipes.
Super Steel Manufacturing Co.,Ltd is professional copper pipes manufacturer, for more details, please contact:sales@super-steels.com
Rectangular Tube Standard Sizes
|
Size by Inch (diameter) |
Thickness |
Sizes by MM (diameter) |
Thickness |
|
inch |
inch |
mm |
mm |
|
1“ x 1/2" |
0.065" |
10mm×15mm |
0.6mm～1.5mm |
|
1“ x 3/4" |
0.065" |
10mm×20mm |
0.6mm～1.5mm |
|
0.095" |
14mm×21mm |
0.6mm～1.5mm |
|
|
1 1/4" x 3/4" |
0.065" |
15mm×30mm |
0.6mm～1.5mm |
|
1 1/2" x 3/4" |
0.065" |
15mm×38mm |
0.6mm～1.5mm |
|
0.120" |
20mm×20mm |
0.6mm～2mm |
|
|
1 1/2" x 1" |
0.065" |
20mm×30mm |
0.6mm～2mm |
|
0.072" |
20mm×40mm |
0.6mm～2mm |
|
|
0.083" |
20mm×50mm |
0.6mm～2mm |
|
|
0.120" |
22mm×35mm |
0.6mm～2mm |
|
|
2“ x 1” |
0.065" |
25mm×40mm |
0.9mm～2mm |
|
0.083" |
25mm×65mm |
0.9mm～3.75mm |
|
|
0.120" |
30mm×20mm |
1mm～2mm |
|
|
0.188" |
30mm×40mm |
1mm～3.75mm |
|
|
2” x 1 1/4“ |
0.065" |
30mm×45mm |
1mm～3.75mm |
|
0.083" |
30mm×50mm |
1mm～3.75mm |
|
|
2“ x 1 1/2” |
0.083" |
30mm×60mm |
1mm～4mm |
|
0.120" |
40mm×25mm |
1mm～4.5mm |
|
|
2 1/2“ x 1 1/2” |
0.072" |
40mm×50mm |
1mm～4.5mm |
|
0.083" |
40mm×60mm |
1mm～4.5mm |
|
|
0.120" |
40mm×80mm |
1mm～5mm |
|
|
0.148" |
40mm×100mm |
1mm～5mm |
|
|
0.188" |
50mm×25mm |
2mm～5mm |
|
|
0.250" |
50mm×30mm |
2mm～5mm |
|
|
3" x 1" |
0.083" |
50mm×60mm |
2mm～5mm |
|
0.120" |
50mm×80mm |
2mm～5mm |
|
|
0.188" |
50mm×100mm |
2mm～5mm |
|
|
3“ x 1 1/2” |
0.083" |
60mm×30mm |
2mm～6mm |
|
0.120" |
60mm×40mm |
2mm～6mm |
|
|
0.188" |
60mm×80mm |
2mm～6mm |
|
|
0.250" |
70mm×50mm |
2mm～6mm |
|
|
3“ x 2” |
0.065 |
80mm×30mm |
2mm～8mm |
|
0.083 |
80mm×40mm |
2mm～8mm |
|
|
0.125 |
80mm×60mm |
2mm～8mm |
|
|
0.188 |
80mm×100mm |
2mm～8mm |
|
|
0.250 |
100mm×50mm |
2mm～8mm |
|
|
3“ x 2” |
0.083" |
120mm×60mm |
2.5mm～10mm |
|
0.120" |
120mm×80mm |
2.5mm～10mm |
|
|
0.188" |
140mm×60mm |
2.5mm～10mm |
|
|
0.250" |
140mm×80mm |
2.5mm～10mm |
|
|
0.312" |
150mm×100mm |
2.5mm～12mm |
|
4“ x 1 1/2” |
0.120" |
160mm×80mm |
2.5mm～12mm |
|
0.188" |
180mm×150mm |
2.5mm～12mm |
|
|
4“ x 2” |
0.083" |
200mm×100mm |
4mm～12mm |
|
0.120" |
200mm×150mm |
4mm～12mm |
|
|
0.188" |
220mm×140mm |
4mm～12mm |
|
|
0.250" |
250mm×150mm |
6mm～12mm |
|
|
0.312" |
250mm×100mm |
6mm～12mm |
|
|
0.375" |
250mm×200mm |
6mm～30mm |
|
|
4“ x 2 1/2” |
0.188" |
300mm×100mm |
6mm～30mm |
|
0.250" |
300mm×150mm |
6mm～30mm |
|
|
4" x 3" |
0.083" |
300mm×200mm |
6mm～30mm |
|
0.120" |
300mm×250mm |
6mm～30mm |
|
|
0.188" |
400mm×250mm |
8mm～30mm |
|
|
0.250" |
400mm×300mm |
8mm～30mm |
|
|
0.312" |
450mm×200mm |
8mm～30mm |
|
|
0.375" |
450mm×250mm |
8mm～30mm |
|
|
4 1/2“ x 2 1/2” |
0.188" |
400mm×300mm |
8mm～30mm |
|
0.250" |
400mm×350mm |
8mm～30mm |
|
|
5" x 2” |
0.120" |
500mm×200mm |
10mm～30mm |
|
0.188" |
500mm×250mm |
10mm～30mm |
|
|
0.250" |
500mm×300mm |
10mm～30mm |
|
|
0.312" |
500mm×350mm |
10mm～30mm |
|
|
0.375" |
500mm×400mm |
10mm～30mm |
|
|
5" x 2 1/2” |
0.120" |
500mm×450mm |
10mm～30mm |
|
0.188" |
600mm×200mm |
10mm～28mm |
|
|
0.250" |
600mm×400mm |
10mm～28mm |
|
|
5" x 3" |
0.188" |
600mm×500mm |
10mm～28mm |
|
0.250" |
800mm×400mm |
10mm～28mm |
|
|
0.312" |
800mm×600mm |
10mm～28mm |
|
|
0.375" |
800mm×700mm |
10mm～28mm |
|
|
0.500" |
1000mm×400mm |
10mm～28mm |
|
|
5" x 4" |
0.188" |
1000mm×500mm |
10mm～28mm |
|
0.250" |
1000mm×600mm |
10mm～28mm |
|
|
0.312" |
1000mm×800mm |
10mm～28mm |
|
|
0.375" |
|
|
|
|
6" x 2" |
0.120" |
|
|
|
0.188" |
|
|
|
|
0.250" |
|
|
|
|
0.312" |
|
|
|
|
0.375" |
|
|
|
6“ x 3" |
0.120" |
|
0.188" |
|
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
6“ x 4" |
0.120" |
|
0.188" |
|
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
7“ x 3" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
7“ x 4” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
7“ x 5” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
8“ x 2” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
8“ x 3” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
8“ x 4” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
8" x 6” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
9“ x 3” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
9“ x 7” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
10“ x 2” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
10" x 3” |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
10" x 4" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
10" x 5" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
10" x 6" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
10" x 8" |
0.188" |
|
0.250" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
12" x 2" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
12" x 3" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
12" x 4" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
12" x 6" |
0.188" |
|
0.250" |
|
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
12" x 8" |
0.250" |
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
12" x 10" |
0.250" |
|
14" x 4" |
0.250" |
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
14" x 6" |
0.250" |
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
14" x 10" |
0.250" |
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
|
16"x 4" |
0.312" |
|
0.375" |
|
|
0.500" |
|
|
16" x 8" |
0.250" |
|
0.312" |
|
|
0.375" |
|
|
0.500" |
|
|
16" x 12" |
0.312" |
|
0.375" |
|
|
0.500" |
|
|
0.625" |
|
18" x 6" |
0.312" |
|
0.375" |
|
|
0.500" |
|
|
20" x 4" |
0.312" |
|
0.375" |
|
|
0.500" |
|
|
20" x 8" |
0.312" |
|
0.375" |
|
|
0.500" |
|
|
20" x 12" |
0.312" |
|
0.375" |
|
|
0.500" |
|
|
0.625" |
Sizes can be customized according to customer requirements.
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