ASTM A554 Stainless Steel Square & Rectangular Tubing

Sharp Corners. Polished Finish. Structural & Decorative.

The Standard for Modern Construction.
From architectural glass railings to heavy-duty machinery frames, Square and Rectangular Hollow Sections (SHS/RHS) are the building blocks of industry.
Vertex Tubes manufactures ASTM A554 compliant square tubes with a focus on Corner Definition and Surface Consistency. Whether you need a Mirror finish for a hotel lobby or a Satin finish for an industrial rack, our tubes offer straightness and weld integrity you can trust.

 Key Features

geometric-precision

Corner Definition: Sharp & Clean

Architects hate “bulbous” corners.

Controlled Radius: Unlike standard tubes with overly rounded edges, we control the forming radius to ensure sharp, crisp corners (Small R-Angle) for a modern look.

Consistency: The corner radius remains consistent throughout the entire length of the tube.

Surface Flatness: No Waviness

Polishing flat surfaces is harder than round ones.

Flat Polishing Tech: We use specialized flat-surface polishing heads to prevent “polishing waves” or depression on the tube face.

Mirror Quality: For large rectangular tubes (e.g., 50x100mm), the reflection is undistorted, acting like a true mirror.

500-molds
aesthetic-finishes

Structural Integrity (ASTM A554)

Not just for looks, but for load bearing.

High-Frequency Welding: The weld seam is continuous and solid.

Flattening Test: Our tubes pass the 90° flattening test without cracking at the weld, ensuring safety for furniture frames and racks.

 The "Vertex Quality Standard"

Shape & Tolerance Standards

Inspection ItemVertex Factory Standard
Corner Radius (R-Angle)Strictly Controlled (Matches ASTM A554 table).
Flatness (Sides)No Concavity/Convexity > 0.5% of side width.
Straightness< 1.0mm / meter (Critical for long glass railings).
TwistMinimal Twist (Ensures easy installation).
Weld IntegrityNo Cracking during flattening test.

 Common Configurations Available

Small Square TubeApplications: Furniture Legs, Towel Racks, Display Stands.
Popular Sizes: 10x10mm, 12.7x12.7mm, 19x19mm.
Structural Square TubeApplications: Machinery Frames, Gate Posts, Heavy Racks.
Popular Sizes: 38x38mm, 50x50mm, 100x100mm.
Rectangular TubeApplications: Glass Balustrade Handrails, Beams.
Popular Sizes: 20x40mm, 25x50mm, 40x60mm, 50x100mm.
Thick Wall TubeApplications: Heavy Duty Supports.
Thickness: Up to 3.0mm or 4.0mm available.

 Common Special Shapes Available

astm-a554-stainless-steel-square-rectangular-tubing

Glass Railings

Rectangular tubes for handrails & posts.

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Furniture Frames

Mirror polished tubes for tables & chairs.

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Industrial Racks

Strong square tubes for storage systems.

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Security Gates

Durable tubes for fences and barriers.

 Frequently Asked Questions (FAQ)

A: Yes. We can adjust our forming rollers to achieve a tighter corner radius (Small R) for a crisp, modern architectural look.

A: Yes. We have specialized polishing lines for wide faces (up to 100mm+ width) to ensure a uniform finish without “shadows” or “waves.”

A: Standard length is 5.8m or 6.0m (to fit containers). We can also cut to specific shorter lengths to save shipping space.

Need a Quote for Square Tubes?

Check our size list or send us your inquiry directly.

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