Q235B Carbon Steel Sheet / Plate — Manufacturer, Price, Specifications
High-quality Q235B Carbon Steel Sheet / Plate — direct from factory

What is Q235B Carbon Steel Sheet / Plate?
Q235B is the most common carbon structural steel in China, equivalent to ASTM A36. Good ductility and weldability, widely used in general structural applications. The "B" denotes quality grade with impact testing at 20°C.
Q235B Carbon Steel Sheet / Plate is one of our most popular products, widely used across various industries including building structure and steel frames and more.
Our q235b 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 Q235B grade, in accordance with relevant standards.
| Element | Range / Max |
|---|---|
| Carbon (C) | Max: 0.20% |
| Manganese (Mn) | 0.30 - 0.70% |
| Silicon (Si) | Max: 0.35% |
| Sulfur (S) | Max: 0.045% |
| Phosphorus (P) | Max: 0.045% |
Mechanical Properties
Typical mechanical properties of Q235B at room temperature.
| Property | Value |
|---|---|
| Tensile Strength | 375 - 460 MPa |
| Yield Strength (min, t≤16mm) | 235 MPa |
| Elongation (min) | 26% |
Applications of Q235B Steel
Q235B steel is widely used in the following industries and applications:
- Building structure and steel frames
- Bridges and highway construction
- Machinery parts and components
- Pipe supports and racks
- Storage tanks and containers
- General fabrication
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 Q235B 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.