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Round Tube

Square Tube
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Round Tube is durable steel tubing with a circular profile designed for construction, fabrication, and general engineering applications

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Description

Round Tube is a versatile steel tubing product designed for structural, fabrication, and engineering applications where strength, durability, and clean lines are required. The circular profile provides even load distribution and reliable performance, making it widely used in construction, frameworks, and general steel fabrication. Round tubing is commonly selected for projects that require strong tubular sections that are easy to cut, weld, and fabricate while maintaining consistent structural support.

Key Features

  • Round steel profile provides balanced strength and structural stability
  • Available in outside diameters from 16.0mm up to 219.1mm
  • Multiple wall thickness options from 1.6mm to 6.0mm depending on size
  • Suitable for cutting, welding, bending, and fabrication applications
  • Reliable steel tubing option for structural and engineering use
  • Suitable for a wide range of construction and manufacturing projects

Applications

  • Construction frameworks and structural supports
  • Gates, railings, and fencing structures
  • Agricultural and industrial equipment
  • General steel fabrication and engineering

Outside diameter

(mm)

 Wall thickness (mm)
1.6 2.0 2.5 3.0 3.5 4.0 4.5 5.0 6.0
15.8 0.564
19.1 0.689 0.841
21.4 0.783 0.959 1.17 1.36
25.4 0.939 1.15 1.41
26.9 1.00 1.23 1.51 1.78
32.0 1.19 1.47 1.80 2.13
34.1 1.28 1.59 1.95 2.30 2.64 2.97
38.1 1.44 1.78 2.20 2.60 2.99
42.8 1.63 2.02 2.49 2.95 3.39 3.83
48.5 1.85 2.29 2.83 3.36 3.88 4.38 4.88
50.8 1.91 2.37 2.93 3.48 4.08 4.62
57.1 2.19 2.72 3.37 4.01 4.63 5.24
60.3 2.32 2.88 3.57 4.24 4.91 5.56 6.20
63.5 2.44 3.03 3.76 4.48 5.18 5.87 6.55
76.2 2.94 3.66 4.55 5.42 6.28 7.12 7.96 8.78 10.39
88.9 3.45 4.29 5.33 6.36 7.37 8.38 9.37 10.35 12.27
101.6 3.95 4.91 6.11 7.30 8.47 9.63 10.78 11.91 14.15
114.3 5.54 6.89 8.24 9.57 10.88 12.19 13.48 16.03
127.0 6.17 7.68 9.18 10.66 12.14 13.60 15.05 17.91
139.7 10.12 11.76 13.39 15.01 16.61 19.79
152.4 11.06 12.85 14.64 16.41 18.18 21.67
165.1 12.00 13.95 15.89 17.83 19.74 23.55
177.8 12.93 15.05 17.07 19.15 21.31 25.42
193.7 16.42 21.00 27.78
219.1 18.60 23.81 31.52

Colour code relating to the grade of steel

SAE 1008 (Si less than 0.03)
SABS 1431  S355

Additional information

Grade

SABS 1431 S355, SAE 1008
Outside Diameter

15.8mm, 19.1mm, 21.4mm, 25.4mm, 26.9mm, 32.0mm, 34.1mm, 38.1mm, 42.8mm, 48.5mm, 50.8mm, 57.1mm, 60.3mm, 63.5mm, 76.2mm, 88.9mm, 101.6mm, 114.3mm, 127.0mm, 139.7mm, 152.4mm, 165.1mm, 177.8mm, 193.7mm, 219.1mm
Wall Thickness

1.60mm, 2.00mm, 2.50mm, 3.00mm, 3.50mm, 4.00mm, 4.50mm, 5.00mm, 6.00mm

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