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Corrosion-Resistant 316L/2205 Duplex Stainless Square Pipe | ASTM-Certified Structural Tubing
Corrosion-Resistant 316L/2205 Duplex Stainless Square Pipe | ASTM-Certified Structural Tubing
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High-Performance Stainless Steel Structural Tubing
Engineered for demanding construction and gas systems, this ASTM-certified seamless square/rectangular tubing in 316L/304L grades delivers unmatched durability with a 120-mesh polished surface (Ra ≤3.2μm) and ±0.1% dimensional tolerance.
Technical Specifications
- Material Excellence:
- PREN Values: 316L=26.8 | 304L=19.5
- Temperature Range: -40°C to 850°C operational capacity
- Salt Spray Resistance: 480-1,500 hours (ASTM B117)
- Processing Flexibility:
- Hot-Rolled (3-120mm) for structural integrity
- Cold-Rolled (0.5-3mm) for precision applications
Key Advantages
◆ Durability Optimized
- Seamless construction eliminates corrosion-prone welds
- Yield Strength: 316L=220 MPa | 304L=170 MPa
◆ Custom Fabrication:
[✓] CNC Bending (180° precision)
[✓] Laser Cutting (±0.2mm kerf accuracy)
[✓] ASME-Certified Orbital Welding
Logistics & Compliance
- Packaging: Triple-layer seaworthy crates (60×40×40cm) with VCI paper and PE coating
- Delivery: 15-21 days for custom lengths (MOQ 1 ton, bulk discounts available)
- Certifications:
- ASTM A312/A789 (Pressure Systems)
- EN 10204 3.1 Material Traceability
- NACE MR0175 (Sour Gas Environments)
Applications
✔️ High-pressure gas distribution networks
✔️ Seismic-resistant building frameworks
✔️ Coastal infrastructure reinforcement
✔️ Chemical plant structural supports




