Rectangular tube
The workhorse band: purlins, racking uprights, trailer bearers and general fabrication. Stocked in Q355B for same-week dispatch.
Cross-section
Outside dimension 30×60 mm, wall 2.0–4.0 mm, corner radius 2–3 × wall.
Specification
| Section | 30×60 mm |
|---|---|
| Wall range | 2.0 – 4.0 mm |
| Weight / m | 2.7 – 5.15 kg |
| Length | 6 / 9 / 12 m, or cut to length |
| Production line | Cold-formed |
| Standards | GB/T 6728 · GB/T 3094 · EN 10219 · ASTM A500 |
| Tolerance | Wall ±10 % · squareness 90° ±1° · straightness ≤0.15 % L |
| Certificate | EN 10204 3.1 mill certificate with every heat |
Weights assume 7.85 g/cm³. Made to order — 10–25 days.
Grades
Other grades and equivalent EN / ASTM designations are quoted on request. Tell us the standard, not just the grade — we will match it.
Applications
Cut to length and drilled to your DXF, delivered as a bolt-on part.
Mill certificate traceable to the heat, so your inspector signs off without a second trip.
Consistent wall and squareness batch to batch — welding fixtures stay in tolerance.
FAQ
Made to order, 10–25 days depending on grade and coating.
2.7–5.15 kg/m across 2.0–4.0 mm wall (theoretical).
Yes — saw or laser cut to ±0.5 mm, CNC hole patterns from your DXF, deburred and packed per bundle.
Nearby sizes
Send the drawing or the standard — quote within 48 hours.