Common Specifications and Compliance Standards

Specification Range

Thickness: 3–200 mm (common range: 6–100 mm)

Width: 1,000–3,000 mm

Length: 2,000–12,000 mm (customizable per project requirements)

 

 

Processing and Welding Considerations

Machinability

Capabilities: Suitable for hot-rolling, cold-rolling, cutting, punching, and cold bending.

Key Notes:

Thicker plates (≥25 mm) require attention to stress concentration during bending or shaping.

Preheating is recommended before machining (e.g., milling, drilling) to reduce tool wear, especially for hardenable grades.

Weldability

Suitable Welding Methods:

Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), Submerged Arc Welding (SAW).

Welding Best Practices:

Pre-Weld Preparation: Clean surfaces thoroughly to remove mill scale, oil, and contaminants.

Preheating: For thick plates (≥25 mm) or welding in low-temperature environments, preheat to 50–100°C to prevent cold cracking.

Electrodes: Use low-hydrogen electrodes (e.g., E50 series) to minimize hydrogen-induced cracking.

Post-Weld Treatment: Stress-relief annealing may be required for critical components or thick sections.

Corrosion Protection

Performance: Better corrosion resistance than carbon steel but still requires protection in exposed or corrosive environments.

Common Methods:

Hot-Dip Galvanizing: Provides a sacrificial zinc layer for long-term outdoor protection.

Coatings: Epoxy zinc-rich primers or polyurethane paints for atmospheric corrosion resistance.

Cathodic Protection: Used in marine or industrial environments for extended durability (e.g., offshore platforms).

 

 

 

 

Technical Comparisons (for Reference)

Standard/Grade	Yield Strength (≤16mm)	Impact Toughness Standard	Typical Corrosion Resistance
EN 10025-2 S355J2	≥355 MPa	-20°C, ≥27 J (Charpy V)	Moderate (improved by alloying)
GB/T 1591 Q355D	≥355 MPa	-20°C, ≥34 J	Similar to S355J2
ASTM A572 Gr.50	≥345 MPa	Optional (per project)	Comparable to S355JR

 

For specific applications, always consult the latest standard updates or request mill test reports (MTRs) from suppliers to ensure compliance with project requirements.

 

 

 

 

 

 

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 S355 Steel Plate, SGS, BV Certificated, and develop new technical specifications and processes.
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We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
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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.

 

 

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