Mechanical Structural Tube
Round, square and rectangular stainless steel tubing for frames, supports and fabricated components.

Overview
Mechanical structural tube is purchased for fabricated parts, frames, supports, equipment components, construction details and visible stainless assemblies. It is a working material that is cut, welded, bent and finished into a wide range of frameworks and components, so dimensional consistency and a predictable surface matter as much as the grade itself.
The quotation should confirm tube shape, outside dimensions, wall thickness, straightness, tolerance, surface finish and whether the tube will be cut, bent, welded or polished after delivery. Sharing those downstream operations up front lets us recommend the right grade and finish and avoid rework on visible or load-bearing parts.
We supply round, square and rectangular tubing across 201, 304 and 316 from our Foshan plant, with finishes that range from mill surfaces to mirror polish for exposed architectural and equipment work.

Material summary.
How buyers typically scope a structural tube order.
Specifications
Reference ranges — final spec is confirmed from your RFQ.
Built for fabrication.
What makes our structural tube practical to work with.
Three shapes, three grades
Round, square and rectangular tubing in 201, 304 and 316 from one supplier, so you can match shape and corrosion resistance to each part without juggling multiple sources.
Finish to match the job
BA, 2B, brushed, polished and mirror surfaces are available, covering everything from hidden structural members to visible architectural and equipment work.
Ready to fabricate
Consistent dimensions, straightness and tolerance support clean cutting, bending and welding for frames, supports, handrails and machinery components.
What to include in your enquiry
- Shape & outside dimensions
- Wall thickness, straightness & tolerance
- Finish + 304 vs 316 for the environment
Related products & reading
Request a quote: Mechanical Structural Tube
Send your shapes, dimensions and finish and we will confirm grade, tolerance and packing.
- Manufacturer-direct from Foshan since 2006
- GB · ASTM/ASME · JIS · DIN or your drawings
- Export-ready packing & inspection support