Ornamental Tubes Ready to Ship

Stainless Steel Square Tube (ASTM A554)

SKU: TDC-TUBE-SQUARE
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Stainless Steel Square Tubes (also known as Square Hollow Sections) manufactured to ASTM A554 standards. Offering balanced load-bearing capacity and a high-end aesthetic. Available in Mirror and Hairline finishes, perfect for structural frames, columns, and modern furniture.
ISO Certification
High Performance
Industrial Material

Structural Balance: Stainless Steel Square Tubes

Stainless Steel Square Tubes are prized for their symmetrical geometry, providing excellent load-bearing stability across two axes. This makes them the preferred choice for structural columns, frames, and primary supports. Their flat surfaces also simplify welding and assembly with other components compared to round tubing, offering a clean, professional finish.

ASTM A554 Ornamental Standard

Our square tubes are produced to the ASTM A554 standard, emphasizing surface quality and dimensional accuracy. The internal weld bead is rolled flat (Internal Bead Rolled) to ensure ease of assembly with fittings. They provide the necessary strength for general structural and high-end decorative applications.


Technical Specifications

Standard: ASTM A554 (Welded Stainless Steel Mechanical Tubing)
Available Grades: 304, 304L, 316L
Standard Length: 6.0 Meters (6000 mm)
Surface Finishes: Mirror (Grit 600) / Hairline (Brushed)

Standard Weight Chart: Stainless Steel Square Tube (kg per 6m)

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
12.7 x 12.72.392.87------
15.87 x 15.872.993.59------
19.05 x 19.053.594.315.387.18----
20 x 203.774.525.65-----
25 x 25-5.657.079.42----
30 x 30-6.788.4811.30----
40 x 40-9.0411.3015.0722.61---
50 x 50-11.3014.1318.84----

✓ Available in Mirror and Hairline finishes | *Weights are theoretical for estimation purposes.

Common Applications

  • Structural columns, fencing posts, and balustrades.
  • Modern furniture frames (tables, chairs, cabinets).
  • Trade show booths and event structures.
  • Architectural facades and decorative louvers.

Frequently Asked Questions (FAQ)

Square Tubes offer a more modern aesthetic and are easier to clean due to their enclosed shape, making them ideal for visible architectural elements. Angle Bars are generally more cost-effective and are better suited for heavy industrial frames where they might be hidden within the structure.
All ornamental and mechanical stainless steel tubes (ASTM A554) are measured by their Outside Diameter (OD). For example, a 1-inch square tube will measure exactly 25.4 mm on its outer width.
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