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q235 345 355 A36 ASTM516Gr70 carbon steel sheet steel Plate steel plate sheet
sheet
Asia Metal supplies a comprehensive range of structural and pressure vessel carbon steel plates and sheets — including Q235, Q345, Q355, ASTM A36, and ASTM A516 Grade 70 — engineered for construction, heavy machinery, boilers, storage tanks, bridges, and industrial fabrication. Our plates offer excellent weldability, formability, and mechanical strength across varying service conditions. Whether you need general-purpose A36 for structural frames or high-strength low-alloy Q355 for seismic-resistant designs, or pressure-grade A516 Gr70 for boilers and vessels, we guarantee mill-direct pricing, batch consistency, and full customization in thickness, dimensions, surface finish, and testing protocols.
| Parameter | Standard Range | Customizable Options |
|---|---|---|
| Steel Grades | Q235B, Q345B, Q355B, ASTM A36, ASTM A516 Gr70 | Yes — Also available: S235JR, S355JR, SS400, A572 Gr50 |
| Thickness | 3mm – 150mm (Plate), 1.5mm – 25mm (Sheet) | Yes — Precision ground to ±0.1mm; ultrasonic tested for heavy plates |
| Width | 1000mm – 3500mm | Yes — Slit to ±2mm tolerance; max 4000mm on request |
| Length | 2000mm – 12000mm | Yes — Cut-to-length ±5mm; nesting optimization available |
| Surface Finish | Mill Scale, Shot Blasted, Primed, Pickled & Oiled | Yes — Anti-slip, galvanized, painted, or custom coating |
| Edge Condition | Mill Edge, Sheared Edge, Flame-Cut Edge | Yes — Beveled (30°/37.5°), radius edge, or machined |
| Delivery Time | 7–14 Days (Standard Grades & Sizes) | Custom orders: 10–25 days; Rush 5-day for A36/Q235 |
| Certifications | ISO 9001, CE, SGS, BV, MTC (EN 10204 3.1), RoHS | Additional: PED, ASME U-Stamp Support, NACE MR0175, ABS/LR/DNV |
| Grade | Yield Strength (Min) | Tensile Strength | Elongation (Min) | Typical Application |
|---|---|---|---|---|
| Q235B / A36 | 235 MPa / 250 MPa | 375–500 MPa / 400–550 MPa | ≥26% / ≥20% | General structures, non-critical frames, base plates |
| Q345B / S355JR | 345 MPa | 470–630 MPa | ≥21% | Heavy machinery, bridges, offshore platforms |
| Q355B | 355 MPa | 490–630 MPa | ≥20% | Seismic zones, cold regions, high-load structures |
| ASTM A516 Gr70 | 260 MPa | 485–620 MPa | ≥20% | Pressure vessels, boilers, storage tanks (moderate temp) |
A: Q355 is the updated Chinese standard (GB/T 1591-2018) replacing Q345, with slightly higher minimum yield strength (355 vs 345 MPa) and improved low-temperature impact performance. In most structural applications, they are functionally interchangeable, but always verify project specifications or design codes.
A: Yes. A516 Gr70 is specifically designed for moderate and lower temperature pressure vessels. It offers good notch toughness down to -29°C (-20°F). For cryogenic service, consider ASTM A516 Gr70N (normalized) or ASTM A537.
A: Absolutely. We provide certified plates with longitudinal/transverse CVN testing at customer-specified temperatures (e.g., -20°C, -40°C). Reports include absorbed energy values per ASTM A370 or ISO 148. Essential for offshore, arctic, or seismic applications.
A: Yes. We provide CNC plasma/oxy-fuel cutting, drilling, tapping, edge beveling, and rolling. Submit your DXF, DWG, or PDF — we’ll handle nesting, tolerancing, and kitting by assembly number to reduce your labor and waste.
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