ASTM/EN 10297 Certified Stainless Square Tube | 304L/316L/2205 Factory-Direct Supply

High-Performance Stainless Steel Structural Tubing
Seamless ASTM-certified square/rectangular tubing manufactured from 300-series alloys (Grades 304/316L), engineered for demanding gas systems and construction frameworks with ±0.1%-0.3% dimensional precision.

Technical Specifications:
◆ ​Material Excellence

• Dual processing: Hot-rolled (3-120mm) & Cold-rolled (0.5-3mm)
• Surface integrity: 120-grit polished finish (Ra ≤3.2μm)
• Pressure rating: 8.6-34.5 MPa (varies by gauge)

Key Advantages:

• ​Durability Optimized
  PREN values: 304L=19.5 | 316L=26.8
  Salt spray resistance: 480-1,500 hours (ASTM B117)
• ​Custom Fabrication
  CNC bending (±1° angular accuracy)
  Laser cutting (kerf ≤0.2mm)
  ASME-certified orbital welding

Logistics & Compliance:

• MOQ 1 metric ton with bulk pricing tiers
• Seaworthy triple-layer packaging:
  1. VCI anti-corrosion paper
  2. 2mm PE waterproof layer
  3. Steel-reinforced wooden crate (60×40×40cm)
• 15-21 day production cycle for custom lengths

Certifications:

• ASTM A312/A789 (Chemical & Mechanical Properties)
• EN 10204 3.1 Material Traceability
• NACE MR0175 for sour gas environments

Industrial Applications:
✔️ High-pressure gas distribution networks
✔️ Coastal infrastructure frameworks
✔️ Chemical plant structural supports
✔️ Architectural load-bearing elements

Value-Added Services:
[✓] Hydroforming for complex geometries
[✓] Sandblasting (80-120 grit options)
[✓] Full material traceability reports
[✓] 3D CAD file conversion support