Stainless Steel Rectangular Tube (ASTM A554) Box Section
Stainless Steel Rectangular Tube / Box Section (ASTM A554)
- Premium Grades: 304 (General decorative & Food Grade) and 316L (Highly corrosive marine/chlorine environments)
- Dimensional Range: Wide selection from 20 x 10 mm up to heavy-duty 120 x 80 mm (Thickness 1.0 - 6.0 mm)
- Aesthetic Finishes: Mirror Polish (Super Mirror) and Satin Hairline (HL) with robust film protection
- Processing & Logistics: Custom Bandsaw Cutting, Mill Test Certificate (MTC), & Scratch-Free Delivery
Asymmetrical profile handles bending moments along the major axis exceptionally well, ideal for beams, purlins, and premium framing.
Industrial Material
Smarter Engineering: Why Specify Stainless Steel Rectangular Tubes for Beams and Framing?
In structural and architectural engineering, when load resistance is required primarily in a single direction (such as floor support joists, horizontal beams, or roof purlins), Rectangular Hollow Sections (also known as box sections or flat pipes) offer a massive mechanical advantage over square profiles of equal weight. Their taller profile on the major axis handles bending moments (Bending Moment) much more efficiently, allowing you to design sleeker, lighter, and more modern structural frames while optimizing your material procurement costs.
Additionally, the flat faces simplify the joining and welding process compared to round tubes, allowing for flush, aesthetically flawless joints that are highly favored in modern interior framing and premium storefront claddings.
Premium ASTM A554 Standard: Precision Internals and Flawless Surface
Our rectangular stainless steel tubes are manufactured strictly to the ASTM A554 standard for mechanical and ornamental tubing, offering distinct advantages:
- Internal Bead Rolled: The internal weld seam is rolled flat and smoothed out during production. This allows fabricators to slide in internal reinforcing bars, sleeves, or modular connector fittings (Fittings) seamlessly without jamming.
- Flat and Uniform Surface: Strict control over flatness to prevent bowing, denting, or surface waving. Available in highly reflective Mirror finish or brushed Satin Hairline (HL) finish, protected by a heavy-gauge protective film.
Technical Specifications
Standard: ASTM A554 (Welded Stainless Steel Mechanical Tubing)
Available Grades: 304, 304L, 316L (Highly recommended for marine and coastal structural trims)
Standard Length: 6.0 Meters (6000 mm) *Custom bandsaw cutting (Cut-to-Length) available
Standard Weight Chart: Stainless Steel Rectangular Tube (kg per 6m)
| Cross-Section Size (mm) | Wall Thickness (mm) | |||||||
|---|---|---|---|---|---|---|---|---|
| 1.0 mm | 1.2 mm | 1.5 mm | 2.0 mm | 3.0 mm | 4.0 mm | 5.0 mm | 6.0 mm | |
| 20 x 10 | 2.83 | 3.39 | - | - | - | - | - | - |
| 25 x 15 | 3.77 | 4.52 | - | - | - | - | - | - |
| 26 x 13 | 3.67 | 4.41 | - | - | - | - | - | - |
| 30 x 15 | 4.24 | 5.09 | - | - | - | - | - | - |
| 30 x 20 | 4.71 | 5.65 | 7.07 | - | - | - | - | - |
| 40 x 20 | - | 6.78 | 8.48 | 11.30 | - | - | - | - |
| 40 x 30 | - | 7.91 | 9.89 | 13.19 | - | - | - | - |
| 50 x 20 | - | 7.91 | 9.89 | 13.19 | - | - | - | - |
| 50 x 25 | - | 8.48 | 10.60 | 14.13 | - | - | - | - |
| 50 x 30 | - | 9.04 | 11.30 | 15.07 | - | - | - | - |
| 60 x 20 | - | 9.04 | 11.30 | 15.07 | - | - | - | - |
| 60 x 30 | - | 10.17 | 12.72 | 16.96 | - | - | - | - |
| 60 x 40 | - | 11.30 | 14.13 | 18.84 | - | - | - | - |
| 70 x 40 | - | 12.43 | 15.54 | 20.72 | 31.09 | - | - | - |
| 80 x 40 | - | - | 16.96 | 22.61 | 33.91 | - | - | - |
| 80 x 60 | - | - | 19.78 | 26.38 | 39.56 | - | - | - |
| 100 x 40 | - | - | 19.78 | 26.38 | 39.56 | - | - | - |
| 100 x 50 | - | - | 21.20 | 28.26 | 42.39 | 56.52 | - | - |
| 100 x 60 | - | - | 22.61 | 30.14 | 45.22 | 60.29 | - | - |
| 100 x 80 | - | - | - | 33.91 | 50.87 | 67.82 | 84.78 | - |
| 120 x 60 | - | - | - | 33.91 | 50.87 | 67.82 | 84.78 | - |
| 120 x 80 | - | - | - | 37.68 | 56.52 | 75.36 | 94.20 | 113.04 |
✓ Available in Mirror and Hairline finishes | *Weights are theoretical estimates for transportation purposes.
Primary Premium Applications
- Horizontal & Vertical Framing: Floor joists, horizontal support beams, residential roof rafters, and structural canopies.
- Doors & Window Trims: High-end storefront entrance frames, sliding glass door tracks, and secure window grills.
- Architectural Facades: Decorative external sunscreens (Facade), louvers, and visual partitions.
- Loft Furniture Design: Supporting legs for heavy conference tables, wall-mounted display racks, and premium cabinetry frames.
