Q355B Carbon Steel Sheet / Plate — Manufacturer, Price, Specifications
High-quality Q355B Carbon Steel Sheet / Plate — direct from factory
What is Q355B Carbon Steel Sheet / Plate?
Q355B is a low-alloy high-strength structural steel with higher strength than Q235B. Previously known as Q345B. Micro-alloyed with Nb, V, Ti for improved strength without sacrificing ductility.
Q355B Carbon Steel Sheet / Plate is one of our most popular products, widely used across various industries including bridges and high-rise buildings and more.
Our q355b Carbon Steel Sheet / Plate are manufactured to the highest quality standards and come with full Mill Test Certificates (MTC).
Specifications & Dimensions
Hot rolled and cold rolled carbon steel plates for structural and fabrication use.
Standard Sizes & Weight Chart
Reference sizes and theoretical weights. Custom sizes available upon request.
| Thickness | Width | Length | Weight | Note |
|---|---|---|---|---|
| 2.0 mm | 1250 mm | 2500 mm | ~49 kg | Cold rolled / hot rolled |
| 3.0 mm | 1500 mm | 6000 mm | ~212 kg | Hot rolled plate |
| 6.0 mm | 1500 mm | 6000 mm | ~424 kg | Hot rolled plate |
| 10 mm | 2000 mm | 6000 mm | ~942 kg | Medium plate |
| 20 mm | 2000 mm | 6000 mm | ~1,884 kg | Heavy plate |
| 50 mm | 2200 mm | 8000 mm | ~6,908 kg | Thick heavy plate |
Chemical Composition (%)
Chemical composition of Q355B grade, in accordance with relevant standards.
| Element | Range / Max |
|---|---|
| Carbon (C) | Max: 0.20% |
| Manganese (Mn) | Max: 1.70% |
| Silicon (Si) | Max: 0.50% |
| Niobium (Nb) | Max: 0.07% |
| Vanadium (V) | Max: 0.15% |
| Titanium (Ti) | Max: 0.20% |
| Phosphorus (P) | Max: 0.040% |
| Sulfur (S) | Max: 0.040% |
Mechanical Properties
Typical mechanical properties of Q355B at room temperature.
| Property | Value |
|---|---|
| Tensile Strength | 470 - 630 MPa |
| Yield Strength (min, t≤16mm) | 355 MPa |
| Elongation (min) | 22% |
Applications of Q355B Steel
Q355B steel is widely used in the following industries and applications:
- Bridges and high-rise buildings
- Pressure vessels and boilers
- Cranes and lifting equipment
- Offshore structures
- Wind turbine towers
- Heavy machinery and equipment
Why Choose Rubao-Chinasteel as Your Supplier?
Direct Factory Price
We own our manufacturing facilities, ensuring competitive pricing without middlemen markup.
Rigorous Quality Control
Every batch undergoes 3-stage inspection: raw material, production, and final testing with full test reports.
Fast Global Delivery
Standard orders ship within 7-15 days. Well-established logistics network to major ports worldwide.
Custom Processing
Cutting, bending, welding, polishing, and surface treatment available according to your drawings.
Flexible MOQ
Minimum order from 1 ton for standard products. Trial orders welcome for new customers.
24/7 Service
Dedicated sales engineer assigned to each order. Quick response via email, phone, and WhatsApp.
Frequently Asked Questions
What is Q355B steel?
What sizes are available for Carbon Steel Sheet / Plate?
What is the minimum order quantity?
What is the lead time?
Do you provide Mill Test Certificates?
Ready to Get Your Quote?
Send us your specifications and quantity, and we'll reply within 24 hours with a competitive offer.