Q235B mild plate is available 1.4–19.75 mm thick in standard mill sheets from 1250×3000 up to 2000×12000 mm; checkered plate runs 1.8–7.75 mm; Q355B high-strength plate 3.75–19.75 mm. Q235B ≈ ASTM A36 ≈ S275JR ≈ SS400. Cut-to-size, MOQ 5 t, EN 10204 3.1 MTC. CIF quote in 24 hours.
Q235B is the everyday workhorse of Chinese mild steel plate — and its closest matches are ASTM A36, EN S275JR and JIS SS400, so substitution is straightforward for most fabrication and structural work. Below is the actual availability matrix from our Foshan supply range.
Q235B Mill Sheet — Thickness × Size Availability
| Sheet size (mm) | Thickness range (mm) |
|---|---|
| 1250×3000 / 1250×6000 | 1.4 – 11.75 |
| 1500×3000 / 1500×6000 | 1.8 – 19.75 |
| 1500×12000 | 7.75 – 19.75 |
| 1800×6000 / 1800×8000 | 4.75 – 19.75 |
| 1800×12000 | 9.75 – 19.75 |
| 2000×6000 / 2000×8000 | 5.75 – 19.75 |
| 2000×12000 | 7.75 – 19.75 |
Weight formula: kg = thickness × width × length (m) × 7.85. Example: 1500×6000 at 4.5 mm ≈ 319 kg per sheet.
Checkered (Tread) Plate — Q235B
Widths 1250 / 1500 mm, thickness 1.8 – 7.75 mm. For walkways, truck decks, stair treads and industrial flooring. Tear-drop and lentil patterns.
Q355B — High-Strength Option (锰板)
| Sheet size (mm) | Thickness range (mm) |
|---|---|
| 1500×3000 / 1500×6000 / 1500×12000 | 3.75 – 19.75 |
| 2000×6000 / 2000×8000 / 2000×12000 | 7.75 – 19.75 |
Q355B ≈ S355JR ≈ ASTM A572 Gr50 — the step-up when structures need higher yield (355 MPa vs 235 MPa) at similar weight.
Cold Rolled & Galvanized Sheet
| Product | Thickness (mm) | Common sheet sizes (mm) | Finish options |
|---|---|---|---|
| Cold rolled (CR) | 0.4 – 3.0 | 1000×2000 · 1250×2500 · 1500×3000 | DC04/DC03 deep-draw grades on request |
| Galvanized (GI) sheet | 0.5 – 2.5 | 1000×2000 · 1200×2440 · 1250×2500 · 1500×3000 | Regular or zero spangle |
| Zn-Al-Mg sheet | 0.5 – 2.5 | 1250×2500 | Superior edge corrosion resistance |
| Pickled & oiled | 2.0 – 12.0 | 1510×3000 · 1250×2500 | Hot-rolled surface, descaled |
Cut-to-size & processing
Plasma/flame cutting to your drawing, beveling, drilling and bending — shipped as ready-to-use pieces to save your labor cost.
Special tests
Z15/Z25/Z35 through-thickness (Z-test) plates and impact tests at low temperature available for critical applications.
About the Source
Foshan Nikasteel International Trade Co., Ltd. — Foshan, Guangdong. Plates, sections and coils to 50+ countries since 2016. MOQ 5 t, EN 10204 3.1 MTC every order, SGS/BV/TUV inspection on request.
Last updated: October 2026. Thickness availability refreshes with mill production.