Structural Cold Rolled Steel Plate: Grades, Uses, and Export Options for Global Buyers

Structural Cold Rolled Steel Plate

CJM provides structural cold rolled steel plates widely used in applications where enhanced strength and precise dimensional control are essential. These steel sheets are ideal for structural support elements in appliances, automotive parts, mechanical components, and construction subassemblies.

Compared to commercial grades, cold rolled structural steel features higher yield strength, better flatness, and tighter thickness tolerance. It is available in popular grades such as Q345B, Q355B, S235JR, S275JR, S355JR, and more. These products are suitable for both welding and machining operations.

If you are looking for cold rolled steel for structural fabrication, buy Q355B cold rolled plate in China, or need S355JR cold rolled steel with mill certificate, CJM has what you need.

Applications of Structural Cold Rolled Steel Plate

Structural cold rolled plates are commonly used in:

• Automotive inner structural parts (frames, chassis supports)
• Steel cabinet supports and shelving
• Elevator guide rails and parts
• Agricultural machinery components
• Small structural beams and brackets
• Hardware and metal furniture frames

If your application involves corrosion resistance or bridge construction, consider our Weathering Steel Plate or Bridge Steel Plate options.

Available Grades and Specifications

Grade	Standard	Thickness (mm)	Width (mm)	Length (mm)	Yield Strength (MPa)	Tensile Strength (MPa)
Q345B	GB/T 1591	1.5 – 8.0	800 – 1500	1000 – 6000	≥ 345	470 – 630
Q355B	GB/T 1591	1.5 – 8.0	800 – 1500	1000 – 6000	≥ 355	470 – 630
S235JR	EN 10025-2	1.2 – 6.0	800 – 1500	1000 – 6000	≥ 235	360 – 510
S275JR	EN 10025-2	1.5 – 6.0	800 – 1500	1000 – 6000	≥ 275	370 – 530
S355JR	EN 10025-2	2.0 – 6.0	800 – 1500	1000 – 6000	≥ 355	470 – 630

Chemical Composition

Grade	C (%)	Mn (%)	P (%)	S (%)
Q345B	≤ 0.20	≤ 1.70	≤ 0.035	≤ 0.035
Q355B	≤ 0.20	≤ 1.70	≤ 0.030	≤ 0.030
S235JR	≤ 0.17	≤ 1.40	≤ 0.035	≤ 0.035
S275JR	≤ 0.21	≤ 1.50	≤ 0.035	≤ 0.035
S355JR	≤ 0.24	≤ 1.60	≤ 0.030	≤ 0.030

Why Choose CJM Cold Rolled Steel

Precision cold rolling technology ensures consistent flatness and tight tolerance

Large stock of high-strength carbon structural grades

Custom dimensions, slitting, and leveling services

Fast delivery with export-ready packaging and mill test reports

Experienced in global logistics and documentation

We support OEM projects and engineering procurement from Southeast Asia, Middle East, Europe, and South America. Whether you need bulk structural cold rolled steel sheet, or want to order Q355B cold rolled steel for equipment manufacturing, CJM is your reliable supplier.

What Global Buyers Ask

Q: Can Q355B cold rolled plate be used for welding structures?
A: Yes. Q355B and Q345B offer excellent weldability and are commonly used for fabricated structural steel assemblies.

Q: What’s the difference between cold rolled S355JR and hot rolled S355JR?
A: Cold rolled versions offer better surface quality, tighter thickness tolerance, and are ideal for precision-fitted parts.

Q: Do you provide small quantity exports?
A: Yes, our MOQ starts at 1 ton. We also support LCL shipments for trial orders.

Packaging & Logistics‌

• Standard Export Packaging‌: Waterproof paper + steel straps + wooden pallets.
• Flexible Options‌: OEM packaging or bulk shipments.
• Global Logistics‌: FOB, CIF, or door-to-door delivery with real-time tracking.

Contact Us Today

Looking for a trusted Q355B cold rolled steel plate supplier in China? Reach out to CJM today for technical data, stock availability, and a competitive quote. We also offer material samples and detailed certificates on request.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment