Selection Considerations

Load and Environment

Strength Requirements: Match yield strength to the project's load (e.g., Q355B for general structures, Q690D for heavy machinery).

Temperature: Choose grades with appropriate impact resistance (e.g., Q355D for -20°C, Q355E for -40°C).

Corrosion: Use weathering steel (e.g., Q355NH) for outdoor or coastal projects to reduce painting needs.

Fabrication Needs

Weldability: Lower carbon equivalent (CE ≤0.45%) ensures good weldability; thicker plates may require preheating.

Thickness Effects: For plates >30mm, check Z-direction performance (Z15/Z25/Z35) to avoid lamellar tearing during welding.

Standards and Compliance

Ensure compliance with local codes (e.g., GB/T 1591 in China, EN 10025 in Europe).

For international projects, confirm equivalence between grades (e.g., S355JR ≈ Q355B).

 

 

 

 

Common Grades and Equivalents

Chinese (GB/T 1591)	European (EN 10025)	American (ASTM)	Typical Use
Q355B	S355JR	A572 Gr50	General structural steel, bridges
Q355D	S355J2	A572 Gr50	Low-temperature applications (-20°C)
Q460C	S460M	A913 Gr65	High-strength structures (e.g., cranes)
Q355NH	S355J0W	A588 GrA	Weathering steel for outdoor stru

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our Low Alloy High Strength Steel Plate, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

Hot Tags: low alloy high strength steel plate, China low alloy high strength steel plate suppliers, factory, CR240LA, CR2 Steel, CR210IF, CR300LA, Low carbon High strength, HR500LA