Round, square and rectangular tubes
Commercial overview. SUALSA supplies an extensive range of cold-formed tubular profiles in round, square and rectangular cross-sections. The source catalogue includes metric and imperial dimensions, thicknesses, linear masses, cross-sectional areas and geometric properties for structural, industrial and fabrication applications.
Product Description
Cold-formed tubular sections are hollow profiles manufactured with round, square or rectangular geometry. They offer a good strength-to-weight ratio, surfaces suitable for joints and finishes, and a geometry well suited to structures, frames, machinery, metalwork and fabrication.
Families Included in the Catalogue
| Family | Dimensional identification | General range in the file |
|---|---|---|
| Round tube | Outer diameter D x thickness T | D 17.2 to 508 mm |
| Square tube | Side B x side B x thickness T | 20 x 20 to 400 x 400 mm |
| Rectangular tube | Longer side x shorter side x thickness T | 25 x 15 to 500 x 300 mm |
| Imperial range | Nominal dimensions and thicknesses in inches | Round, square and rectangular |
General Thickness Ranges
| System | Thicknesses included |
|---|---|
| Metric | 1.5, 2, 2.3, 2.5, 2.9, 3, 3.2, 3.6, 4, 5, 6, 6.3, 7, 8, 10, 12, 12.5, 14.2 and 16 mm |
| Imperial | 0.10, 0.12, 0.125, 0.134, 0.1875, 0.25, 0.3125, 0.375, 0.50, 0.5625 and 0.625 inches |
Availability: not all dimension-and-thickness combinations are manufactured as standard. The catalogue itself indicates that other dimensions and steel grades can be manufactured on request.
Round Dimensional Range in Millimetres
| Outer diameters D (mm) |
|---|
| 17.2 | 21.3 | 25 | 26.9 | 28 | 30 | 32 | 33.7 | 35 | 37.5 | 38 | 39 | 40 | 41.5 |
| 42 | 42.4 | 44.5 | 45 | 48 | 48.3 | 48.6 | 49.4 | 50 | 51 | 52 | 55 | 56 | 57 |
| 58 | 60 | 60.3 | 61.5 | 62 | 62.2 | 63 | 63.5 | 66 | 68 | 70 | 71.5 | 72 | 75.5 |
| 76 | 76.1 | 80 | 82.5 | 83 | 84 | 88.9 | 89 | 90 | 95 | 96 | 100 | 101.6 | 108 |
| 110 | 113 | 114 | 114.3 | 120 | 125 | 127 | 133 | 139.7 | 152 | 152.4 | 159 | 164 | 165.1 |
| 168 | 168.1 | 168.3 | 177.8 | 193.7 | 200 | 219.1 | 244.5 | 273 | 273.1 | 323.9 | 339.7 | 355.6 | 406.4 |
| 457 | 508 |
Square Dimensional Range in Millimetres
| Sides B x B (mm) |
|---|
| 20 | 22 | 25 | 30 | 35 | 38 | 40 | 42 | 45 | 48 | 50 | 52 | 55 |
| 60 | 64 | 65 | 70 | 80 | 90 | 100 | 101.6 | 110 | 115 | 120 | 125 | 130 |
| 140 | 150 | 160 | 175 | 180 | 200 | 220 | 250 | 260 | 300 | 325 | 350 | 400 |
Rectangular Dimensional Range in Millimetres
| Combinations H x B (mm) |
|---|
| 25 × 15 | 25 × 20 | 30 × 10 | 30 × 15 | 30 × 20 | 30 × 25 | 35 × 10 | 35 × 15 | 35 × 20 |
| 35 × 25 | 35 × 27 | 35 × 30 | 40 × 10 | 40 × 15 | 40 × 20 | 40 × 25 | 40 × 27 | 40 × 30 |
| 40 × 35 | 45 × 10 | 45 × 15 | 45 × 20 | 45 × 25 | 45 × 30 | 45 × 35 | 45 × 40 | 48 × 25 |
| 50 × 10 | 50 × 15 | 50 × 20 | 50 × 25 | 50 × 27 | 50 × 30 | 50 × 35 | 50 × 40 | 50 × 45 |
| 50 × 48 | 52 × 40 | 60 × 10 | 60 × 15 | 60 × 20 | 60 × 25 | 60 × 27 | 60 × 30 | 60 × 34 |
| 60 × 35 | 60 × 40 | 60 × 45 | 60 × 48 | 60 × 50 | 65 × 25 | 65 × 35 | 65 × 55 | 70 × 20 |
| 70 × 25 | 70 × 27 | 70 × 30 | 70 × 35 | 70 × 40 | 70 × 50 | 75 × 50 | 80 × 15 | 80 × 20 |
| 80 × 25 | 80 × 30 | 80 × 40 | 80 × 45 | 80 × 50 | 80 × 60 | 90 × 20 | 90 × 30 | 90 × 40 |
| 90 × 50 | 90 × 60 | 90 × 70 | 100 × 20 | 100 × 30 | 100 × 40 | 100 × 50 | 100 × 60 | 100 × 70 |
| 100 × 80 | 110 × 20 | 110 × 30 | 110 × 50 | 110 × 60 | 110 × 70 | 110 × 100 | 120 × 30 | 120 × 40 |
| 120 × 50 | 120 × 55 | 120 × 60 | 120 × 80 | 120 × 100 | 130 × 50 | 140 × 40 | 140 × 60 | 140 × 70 |
| 140 × 80 | 140 × 100 | 140 × 120 | 150 × 30 | 150 × 50 | 150 × 70 | 150 × 75 | 150 × 90 | 150 × 100 |
| 150 × 130 | 160 × 40 | 160 × 50 | 160 × 60 | 160 × 80 | 160 × 90 | 160 × 100 | 160 × 120 | 160 × 140 |
| 180 × 40 | 180 × 60 | 180 × 70 | 180 × 80 | 180 × 100 | 180 × 120 | 180 × 140 | 185 × 65 | 200 × 80 |
| 200 × 100 | 200 × 120 | 200 × 150 | 200 × 160 | 220 × 100 | 220 × 120 | 220 × 130 | 220 × 140 | 220 × 180 |
| 240 × 80 | 250 × 50 | 250 × 100 | 250 × 150 | 250 × 180 | 250 × 200 | 260 × 100 | 260 × 140 | 260 × 180 |
| 300 × 50 | 300 × 100 | 300 × 150 | 300 × 200 | 300 × 220 | 350 × 150 | 350 × 250 | 400 × 100 | 400 × 200 |
| 400 × 250 | 400 × 300 | 450 × 250 | 500 × 200 | 500 × 300 |
Technical Properties Included in the Tables
| Symbol | Property | Usual unit |
|---|---|---|
| M | Linear mass | kg/m |
| A | Cross-sectional area | cm2 |
| Ixx / Iyy | Moments of inertia | cm4 |
| ix / iy | Radii of gyration | cm |
| Wel,xx / Wel,yy | Elastic section moduli | cm3 |
| Wpl,xx / Wpl,yy | Plastic section moduli | cm3 |
| It | Torsional moment of inertia | cm4 |
| Ct | Torsion modulus | cm3 |
| As | Lateral surface per unit length | m2/m |
| m/t | Nominal length per tonne | m |
| As/V | Ratio of outer surface to volume | m-1 |
Examples of Weights and Areas: Round Tube
| D x T (mm) | Mass kg/m | Area cm2 | I cm4 | i cm |
|---|---|---|---|---|
| 17.2 x 1.5 | 0.581 | 0.740 | 0.230 | 0.558 |
| 21.3 x 2.0 | 0.952 | 1.21 | 0.571 | 0.686 |
| 33.7 x 3.0 | 2.27 | 2.89 | 3.44 | 1.09 |
| 60.3 x 3.0 | 4.24 | 5.40 | 22.2 | 2.03 |
| 88.9 x 5.0 | 10.3 | 13.2 | 116 | 2.97 |
| 114.3 x 6.0 | 16.0 | 20.4 | 300 | 3.83 |
| 168.3 x 8.0 | 31.6 | 40.3 | 1,297 | 5.67 |
| 273 x 10.0 | 64.9 | 82.6 | 7,154 | 9.31 |
| 406.4 x 16.0 | 154 | 196 | 37,449 | 13.8 |
| 508 x 10.0 | 123 | 156 | 48,520 | 17.6 |
Examples of Weights and Areas: Square Tube
| B x B x T (mm) | Mass kg/m | Area cm2 | Ixx = Iyy cm4 | i cm |
|---|---|---|---|---|
| 20 x 20 x 1.5 | 0.826 | 1.05 | 0.583 | 0.744 |
| 40 x 40 x 3.0 | 3.30 | 4.21 | 9.32 | 1.49 |
| 50 x 50 x 5.0 | 6.56 | 8.36 | 27.0 | 1.80 |
| 100 x 100 x 6.0 | 17.0 | 21.6 | 311 | 3.79 |
| 150 x 150 x 10.0 | 41.3 | 52.6 | 1,653 | 5.61 |
| 200 x 200 x 12.5 | 68.3 | 87.0 | 4,859 | 7.47 |
| 300 x 300 x 16.0 | 134 | 171 | 22,076 | 11.4 |
| 400 x 400 x 16.0 | 184 | 235 | 56,154 | 15.5 |
Examples of Weights and Areas: Rectangular Tube
| H x B x T (mm) | Mass kg/m | Area cm2 | Ixx cm4 | Iyy cm4 |
|---|---|---|---|---|
| 25 x 15 x 1.5 | 0.826 | 1.05 | 0.802 | 0.356 |
| 50 x 30 x 3.0 | 3.30 | 4.21 | 12.8 | 5.70 |
| 80 x 40 x 4.0 | 6.71 | 8.55 | 64.8 | 21.5 |
| 100 x 50 x 6.0 | 12.3 | 15.6 | 179 | 58.7 |
| 120 x 80 x 8.0 | 21.4 | 27.2 | 476 | 252 |
| 150 x 100 x 10.0 | 33.4 | 42.6 | 1,162 | 614 |
| 200 x 100 x 12.5 | 48.7 | 62.0 | 2,659 | 892 |
| 300 x 200 x 14.2 | 98.3 | 125 | 14,428 | 7,717 |
| 400 x 300 x 16.0 | 159 | 203 | 44,350 | 28,535 |
| 500 x 300 x 16.0 | 184 | 235 | 76,763 | 34,995 |
Typical Applications
- Light and heavy steel structures.
- Columns, lattices, trusses, frames and supports.
- Machinery, equipment, guards and enclosures.
- Bodywork, trailers, metal furniture and material handling.
- Locksmithing, industrial installations and special projects.
Advantages of Supply from SUALSA
- Extensive dimensional coverage in round, square and rectangular sections.
- Cutting to size and preparation by manufacturing stage, subject to enquiry.
- Other dimensions and steel grades can be assessed on request.
- Traceability and documentation according to order conditions.
- Personalised technical and commercial support.
- National and international supply.
Criteria for Requesting a Quotation
- Shape: round, square or rectangular.
- Outer dimension and thickness.
- Steel grade and required standard.
- Length, quantity and special tolerances.
- Surface finish, protection or galvanising if applicable.
- Cutting or machining services.
- Certificate and traceability requirements.
- Destination and logistics conditions.
Frequently Asked Questions
What shapes does this range include?
Cold-formed round, square and rectangular tube.
What is the range for round tube?
The file covers outer diameters from 17.2 to 508 mm.
What is the range for square tube?
From 20 x 20 to 400 x 400 mm.
What is the range for rectangular tube?
From 25 x 15 to 500 x 300 mm.
What technical properties does the catalogue contain?
Mass, area, moments of inertia, radii of gyration, section moduli, torsion properties, outer surface and nominal length per tonne.
Are all combinations available?
Not necessarily. Each dimension, thickness, steel grade and quantity must be confirmed.
Can other sizes be manufactured?
The catalogue states that other dimensions and steel grades can be assessed on request.
Quick Information for Search Engines and AI Assistants
| Field | Content |
|---|---|
| Product | Cold-formed structural tube |
| Shapes | Round, square and rectangular |
| Round range | D 17.2 to 508 mm |
| Square range | 20 x 20 to 400 x 400 mm |
| Rectangular range | 25 x 15 to 500 x 300 mm |
| Metric thicknesses | 1.5 to 16 mm, depending on dimension |
| Technical data | Weight, area, moments of inertia, radii of gyration, section moduli and torsion |
| Supplier | SUALSA, steel service centre |
Call to Action
Request Availability and a Quotation for Cold-Formed Structural Tube
State shape, dimension, thickness, grade, length, quantity, destination and required documentation.
State shape, dimension, thickness, grade, length, quantity, destination and required documentation.
