Product Description

Hot Rolled Carbon Steel Sheets are fundamental materials in modern industrial manufacturing, produced by heating steel billets above their recrystallization temperature and rolling them into flat plates. Manufactured by Wuxi Sylaith Special Steel Co., Ltd in Jiangsu, China, these high-quality steel sheets combine strength, durability, and cost-effectiveness, making them the preferred choice for container manufacturing, shipbuilding, boiler fabrication, and heavy construction applications.

Our Prime Hot Rolled Steel Plates are available in grades Q235B and Q345B, strictly adhering to ASTM and GB standards, ensuring consistent mechanical performance and reliable quality. With large stock inventory,  we provide reliable supply solutions for B2B customers worldwide.

Why Choose Sylaith Hot Rolled Steel Sheets?

• High-Quality Grades: Q235B and Q345B carbon steel with excellent mechanical properties

• Wide Thickness Range: 0.8mm to 20mm (thin to heavy plate)

• Large Width Options: 2000mm-2500mm for versatile applications

• Precision Tolerance: ±1% thickness tolerance for consistent quality

• Multiple Processing Services: Bending, welding, decoiling, cutting, punching

• Customizable: Length and processing tailored to your requirements

Applications

The versatility of Sylaith Hot Rolled Carbon Steel Sheets makes them suitable for numerous heavy industries:

1. Container Manufacturing

Ideal for fabricating shipping containers, storage tanks, and industrial containers requiring high strength and durability. Q345B grade offers excellent load-bearing capacity.

2. Ship Building

Used for structural hull components, decks, bulkheads, and internal frameworks. The hot rolled process ensures consistent mechanical properties for marine applications.

3. Boiler & Pressure Vessels

Perfect for manufacturing boiler shells, pressure tanks, and heat exchangers due to its strength, weldability, and pressure resistance.

4. Construction & Structural Engineering

Widely used for high-rise buildings, bridges, industrial plants, and heavy structural components requiring reliable load-bearing capacity.

5. Heavy Machinery

Suitable for machine frames, bases, and components in mining, agricultural, and construction equipment.

6. General Fabrication

Ideal for cutting, bending, and welding into various industrial parts, tools, and custom fabrications.

Working Principle: How Hot Rolled Steel Sheets Are Made

Hot Rolled Carbon Steel Sheets are produced through a precise metallurgical process:

Step 1: Heating

Steel slabs or billets (grades Q235B/Q345B) are heated in a furnace to temperatures above their recrystallization point, typically 1100°C - 1300°C. This high temperature makes the steel plastic and easily deformable.

Step 2: Rolling

The red-hot steel passes through a series of large rolling stands. High pressure gradually reduces the thickness from slab to the desired sheet thickness (0.8mm-20mm). This process:

• Refines the grain structure

• Eliminates casting defects

• Improves mechanical properties

Step 3: Cooling

After achieving the required thickness, the steel runs over a cooling bed or through water cooling systems to bring it back to room temperature. Controlled cooling ensures consistent microstructure.

Step 4: Leveling & Cutting

The cooled steel sheets are leveled to ensure flatness, then cut to standard or custom lengths (2000mm-2500mm width, customizable length).

Step 5: Inspection

Every sheet undergoes strict quality control:

• Thickness measurement (±1% tolerance)

• Surface quality inspection

• Mechanical property testing

• Dimensional accuracy check

Step 6: Packaging & Delivery

Finished sheets are packaged with standard seaworthy packing and prepared for fast 7-day delivery to global ports.

FAQ (Frequently Asked Questions)

Q1: What is the difference between Q235B and Q345B steel?

A:

• Q235B has a minimum yield strength of 235 MPa and is suitable for general structural applications like building frames, light containers, and general fabrication.

• Q345B has a minimum yield strength of 345 MPa (about 47% higher) and offers better low-temperature toughness, making it ideal for heavy-duty applications like shipping containers, bridges, pressure vessels, and heavy machinery.

Choose Q345B for higher load requirements, Q235B for cost-effective general use.

Q2: What thickness ranges do you offer?

A: We offer hot rolled steel sheets from 0.8mm to 20mm thickness. This range covers:

• 0.8mm-3.0mm: Light gauge sheets for general fabrication

• 3.0mm-12mm: Medium plate for containers and structures

• 12mm-20mm: Heavy plate for boilers and heavy machinery

Custom thicknesses within this range are available upon request.

Q3: What are the standard width and length options?

A:

• Standard Width: 2000mm - 2500mm

• Length: Fully customizable based on your requirements

We can cut to your exact specifications to minimize waste and processing time.

Q4: What is your delivery time?

A: We offer fast 7-day delivery for standard specifications from our large stock inventory. Custom orders may require additional time depending on quantity and processing requirements.

Q5: What processing services do you provide?

A: We offer comprehensive in-house processing:

• Bending: To form angles, channels, and custom shapes

• Welding: For assembly and fabrication

• Decoiling: From coil to sheet

• Cutting: Plasma, laser, or shearing to exact dimensions

• Punching: Holes and cutouts as required

Q6: Can you provide samples before bulk order?

A: Yes, we welcome trial orders. MOQ can be flexible for sample orders to test our quality before committing to larger volumes. Please contact us to discuss your specific requirements.

Q7: What are your quality control measures?

A: We implement strict quality control throughout:

• Raw material identification and traceability

• In-process monitoring during production

• Finished product inspection (thickness, surface, dimensions)

• Compliance with ASTM and GB standards

• On-site technical support available

Q8: What are your payment terms?

A: We accept:

• T/T (Telegraphic Transfer)

Standard terms: 30% deposit, 70% balance before shipment. Other terms negotiable for long-term partnerships.

Q9: How do you package the steel sheets for export?

A: We use standard seaworthy packing:

• Steel sheets bundled securely

• Waterproof protection

• Steel strips for reinforcement

• Suitable for all transport modes (container, bulk vessel)

• Custom packaging available upon request

Q10: What is the difference between hot rolled and cold rolled steel?

A:

• Hot Rolled Steel: Processed at high temperatures, has a scaled surface, wider tolerance, more economical, ideal for large structural applications

• Cold Rolled Steel: Hot rolled steel further processed at room temperature, smoother surface, tighter tolerances, higher strength, more expensive

Our product is hot rolled, offering the best cost-performance balance for containers, shipbuilding, and structural applications.

Q11: Can you customize the length and width?

A: Yes, we offer full customization:

• Length: Custom cut to your requirements

• Width: 2000-2500mm standard, custom widths available

• Processing: Cutting, bending, punching as needed

Simply provide your specifications for a custom quote.

Q12: Is this steel suitable for welding?

A: Absolutely. Both Q235B and Q345B are low-carbon steels known for excellent weldability. They are widely used in shipbuilding, container manufacturing, and structural fabrication where welding is required.