Tianjin Brisk Steel is one of the manufacturers of 300x300mm Square Box Section 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
| Feature | Specification |
| Dimensions | Exact 300mm × 300mm outer square, wall thickness options from 6mm to 20mm (popular: 10mm, 12mm, 16mm); standard length 6m, custom cutting (3m, 4.5m, 12m) available with no extra waste |
| Material Grades & Standards |
Carbon steel: S235JR, S355JR, S355J2H, S355J0H, S460NH, S420NH (EN10210/EN10219); A500 Grade B/C (ASTM); Q235B, Q355B (GB/T); JIS G3466 Optional: 304/316 stainless steel, hot-dip galvanized carbon steel (for marine/coastal outdoor use) |
| Processes |
ERW (Electric Resistance Welding): Cold-formed from steel coil, high-frequency welding for longitudinal seam; common for medium wall thicknesses LSAW (Longitudinal Submerged Arc Welding): Hot-rolled plates formed and SAW welded; for thick walls and high-strength requirements Seamless: Less common for large SHS, used in ultra-high-pressure applications |
| Finishes | Black (as-rolled), hot-dip galvanized (anti-corrosion ≥ 80μm), painted (epoxy/polyester), sandblasted |
| Certifications | CE, ISO 9001, mill test certificates (MTC) per EN 10204 3.1 |
Key Applications
Key Applications
- Building & Construction: High-rise columns, factory/warehouse main frames, steel trusses, bridge piers & crossbeams
- Infrastructure & Renewable Energy: Solar farm support structures, wind turbine platforms, highway guardrail posts, municipal pipe racks
- Industrial & Heavy Equipment: Crane booms, machine frames, material handling racks, container chassis
- Agricultural: Barn frames, large-scale farm machinery chassis, livestock fencing systems
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