Bulk Supply ASTM 321/2205 Stainless Square Tube | 316L/304L Duplex Pipes for High-Temp Systems

High-Performance Stainless Steel Structural Tubing
Engineered for critical infrastructure projects, this ASTM-certified stainless steel square tube in 316L/304L/321/2205 grades delivers unmatched durability with 300-series chromium-nickel composition and PREN values up to 35.6.

Technical Specifications:
◆ ​Material Superiority

• Seamless construction with ±0.1% dimensional accuracy
• 120-grit polished surface (Ra ≤3.2μm)
• Temperature range: -40°C to 850°C operational capacity

Key Advantages:

• ​Structural Integrity
  Yield strength: 304L=170MPa | 316L=220MPa | 2205=550MPa
  Salt spray resistance: 480-1,500 hours (ASTM B117)
• ​Custom Fabrication
  CNC precision cutting (±0.5mm)
  Hydraulic bending (R=3D minimum)
  ASME-certified orbital welding

Logistics & Value:

• MOQ 1 metric ton with bulk discounts (5-8% for 10+ tons)
• Triple-layer seaworthy packaging:
  1. VCI anti-corrosion paper
  2. 2mm PE waterproofing
  3. Steel-braced wooden crate (60×40×40cm)
• 15-21 day production cycle for custom specifications

Certifications:

• ASTM A312/A269 (Pressure Applications)
• EN 10204 3.1 Material Traceability
• NACE MR0103 for acidic environments

Industrial Applications:
▸ LNG pipeline support systems
▸ Coastal bridge frameworks
▸ Chemical plant structural members
▸ High-rise building exoskeletons

Processing Services:
[✓] Laser Micro-Cutting (0.2mm precision)
[✓] 3D Profile Bending (CNC-controlled)
[✓] Sandblasting & Electropolishing
[✓] Third-Party Inspection Reports