Tianjin Brisk Steel is one of the manufacturers of EN10219 S355NLH Black Welded Square Steel Tube in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.
PRODUCT
Tianjin BRISK STEEL focus on produce and supply hollow section and steel pipe
Key Specifications
|
Standard |
EN 10219, BS EN 10219 (equivalent standards), EN 10210-1 |
|
Steel Grade |
S355NLH |
| Steel Number | 1.0549 |
|
Type |
Welded Square Steel Tube (ERW/LSAW, optional) |
|
Surface Treatment |
Black (black painted or bare black surface) |
|
Size Range |
Outer Diameter: 10×10mm - 1200×1200mm Wall Thickness: 0.5mm - 60mm Length: 0.5m - 26.5m (customizable according to customer requirements) |
|
Certification |
CE, ISO 9001, ISO 14001,Mill Test Certificate (EN 10204 Format 3.1/3.2) |
Chemical Composition
| Grade |
Chemical Composition (Max %) |
||||||||||||||
|
C |
Si |
Mn |
P | S | Nb | V | Al(Min) | Ti | Cr | Ni | Mo | Cu | N |
Carbon Equivalent (CEV) |
|
| S355NLH |
0.18 |
0.50 |
1.65 |
0.030 |
0.025 |
0.050 |
0.12 |
0.02 |
0.03 |
0.30 |
0.50 |
0.10 |
0.35 |
0.015 |
≤0.43 (for thickness ≤16mm) ≤0.45 (for thickness 16-65mm) |
Mechanical Properties
|
Mechanical Properties |
|||
|
Yield Strength (Reh) |
Tensile Strength (Rm) |
Elongation (A) |
Impact Energy (Kv) |
|
≥355MPa (≤16mm) ≥345MPa (16-40mm) ≥335MPa (40-65mm) |
470-630MPa |
≥22% (longitudinal) ≥20% (transverse) |
≥27J at -50℃ |
Product Advantages
Product Advantages
-
Strict Standard Compliance: Fully meets EN10219 and EN10210-1 standards, ensuring stable product quality and compatibility with European engineering projects.
-
Excellent Performance: As a fine-grain steel, it has outstanding low-temperature toughness (impact test at -50℃), high strength, and good welding performance, suitable for harsh working environments.
-
Advanced Welding Technology: Adopting high-precision ERW (Electric Resistance Welding) or LSAW (Submerged Arc Welding) process, the welds are uniform, dense and firm, with strict weld inspection to ensure no defects such as cracks or porosity. The products undergo professional heat treatment to remove internal stress around the welds, greatly reducing the risk of cracking and ensuring stable structural performance.
-
Competitive Price: Direct factory supply, no middlemen, ensuring competitive pricing while maintaining high quality; bulk orders enjoy more preferential terms.
Application Fields
Application Fields
EN10219 S355NLH Black Welded Square Steel Tube is widely used in various fields due to its excellent performance, including:
- Construction Engineering: Steel structures, building frames, bridges, guardrails, and greenhouse frames.
- Mechanical Manufacturing: Machine tool bodies, equipment brackets, automobile chassis, and mechanical components.
- Industrial Applications: Chemical industry, mining, petroleum/gas drilling, and hydraulic/pneumatic pipelines.
- Other Fields: Shipping, solar energy components, and decorative projects.
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