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S355J2W

We have a modern 3,800-square-meter warehousing center with a standing inventory of over 100,000 tons per month in a wide variety of steel products, ensuring rapid availability of the steel you need and meeting urgent order demands. We offer professional futures resource customization services, allowing us to flexibly tailor solutions according to your specific specifications, quantities, and delivery timelines. This creates a robust supply assurance system featuring “instant spot availability plus precise futures customization,” providing customers with a comprehensive steel supply solution—from order placement all the way through to transportation.

Commodity name： S355J2W

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Medium and Heavy Plate Series

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Product Description

Distinctive core features: Combines both strength and toughness; its high yield strength enables it to withstand the heavy loads and alternating wind-induced loads of wind turbine towers and flanges, while its excellent low-temperature toughness makes it well-suited for operation in extremely cold regions. It also exhibits outstanding resistance to delamination tearing. Z-direction performance grades can prevent cracking during the welding of thick plates, ensuring the structural stability of tower cylinders and pile foundations. With excellent corrosion resistance, this steel for offshore wind power can withstand salt-spray corrosion, thereby extending its service life. At the same time, it boasts outstanding weldability and machinability, making it well-suited to the integrated manufacturing and installation requirements of large-scale wind power equipment.

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Honors and Qualifications

2024 Annual Strategic Partner for Steel Varieties

2023 Annual Strategic Partner for Variety Steel

Zhonggang Network Supermarket Outstanding Supplier

"Diamond Cup" Lange Steel Network "Top 100 List"

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Frequently Asked Questions

What are the differences in performance requirements between steel used for construction and steel used for machinery manufacturing?

Structural steel focuses on strength (especially yield strength), plasticity, toughness, and weldability. For example, reinforcing bars need good ductility to accommodate concrete deformation, facilitate welding connections, and also require certain seismic resistance (good toughness). Steel used in mechanical manufacturing emphasizes strength, hardness, wear resistance, and fatigue strength. For instance, gear steel requires high hardness and wear resistance to withstand friction, while shaft steel needs good comprehensive mechanical properties (matching strength and toughness) to resist alternating loads.

What is the difference between the yield strength and tensile strength of steel? Which one is more important in engineering applications?

Yield strength is the stress at which steel begins to undergo plastic deformation, marking the critical point where the material transitions from the elastic stage to the plastic stage; tensile strength is the maximum stress that steel can withstand before fracture, reflecting the material's ultimate resistance to failure. In engineering applications, yield strength is usually more important because when the material stress reaches the yield strength, irreversible plastic deformation occurs, which may affect the normal use of the structure. Design generally uses yield strength as the basis for strength design to ensure that the structure does not undergo excessive deformation during use.

Into how many categories can steel be divided based on its chemical composition? What are the characteristics of each?

Steel can be mainly divided into carbon steel and alloy steel based on its chemical composition. In carbon steel, carbon is the main alloying element. According to the carbon content, it is further divided into low carbon steel (carbon content ≤ 0.25%), medium carbon steel (0.25% < carbon content ≤ 0.6%), and high carbon steel (carbon content > 0.6%). Its characteristics include lower cost, simpler smelting process, and performance that improves in strength and hardness but decreases in plasticity and toughness as the carbon content increases. Alloy steel is based on carbon steel with added alloying elements such as chromium, nickel, and manganese, offering higher strength, toughness, wear resistance, or corrosion resistance, making it suitable for more demanding working conditions.

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