309 Stainless Steel Square Tube
309 stainless steel square tube is a high-performance Cr-Ni alloy product engineered for extreme environments, integrating exceptional high-temperature resistance, corrosion resistance, and structural rigidity. Compliant with international quality standards, it's designed to meet industrial manufacturing demands while optimizing warehouse storage efficiency.
Core Specifications
| Parameter | Details |
|---|---|
| Material | 309 Stainless Steel (22% Cr, 12% Ni Alloy) |
| Temperature Range | -270℃ to 900℃ (Continuous Service) |
| Side Length | 10mm×10mm - 100mm×100mm (Standard); Custom Sizes Available |
| Wall Thickness | 1mm - 8mm (Standard); Thick-Walled Options for Heavy-Duty Use |
| Length | 3m, 6m (Standard); Custom Lengths for Warehouse Adaptability |
| Surface Finish | Pickled & Passivated, 2B, Polished |
| Tensile Strength | ≥515MPa |
| Certification | ISO 9001, ASTM A513, EN 10219 |
Key Advantages
Exceptional High-Temp Stability: Maintains structural integrity at up to 900℃, ideal for high-heat equipment and industrial furnaces.
Superior Corrosion Resistance: Resists oxidation, acids, alkalis, and chlorides, ensuring long service life in harsh environments.
Strong Structural Rigidity: Square cross-section provides excellent load-bearing capacity for engineering applications.
Warehouse-Friendly: Uniform shape enables neat stacking on standard racks; standard lengths optimize space utilization.
Easy Fabrication: Excellent weldability and machinability, adapting to cutting, bending, and assembly needs.
Application Scenarios
Industrial Furnace Components & High-Temp Pipelines
Chemical/Petrochemical Equipment Frames
Engineering Machinery Structures
Marine & Offshore Hardware
Warehouse Storage Racks & Shelving
Precision Manufacturing Parts
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