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Heavy-Gauge Hot Rolled 316L Stainless Tube | ASTM-Certified Structural Square Pipes 3-120mm Thickness

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

Technical Specifications

Material Composition:
- 304L: Cr 18-20%, Ni 8-10.5%
- 316L: Cr 16-18%, Ni 10-14%, Mo 2-3%
Surface Quality: 120-grit polished finish (Ra ≤3.2μm)
Mechanical Properties:
- Yield Strength: 304L ≥170MPa | 316L ≥220MPa
- Pitting Resistance (PREN): 304L=19.5 | 316L=26.8

Key Advantages

◆ Dual Manufacturing Processes:

Hot-Rolled: 3-120mm thickness (ASTM A312 compliant)
Cold-Rolled: 0.5-3mm precision (±0.05mm flatness)
◆ Seamless Integrity: Eliminates weld corrosion risks in gas systems
◆ Certified Performance:
1,500+ hrs salt spray resistance (ASTM B117)
Temperature range: -40°C to 850°C

Processing Services

[✓] CNC Rotary Bending (180° precision)
[✓] Laser Micro-Cutting (±0.2mm kerf accuracy)
[✓] ASME IX-Certified Welding
[✓] Hydroforming for complex geometries

Logistics & Compliance

Packaging: Triple-layer seaworthy crates (60×40×40cm)
- VCI anti-corrosion paper
- 2mm PE waterproof coating
- Steel-reinforced wooden frame
Delivery: 15-21 days for custom lengths (MOQ 1 ton)
Standards:
- ASTM A312/A789 (Pressure Systems)
- NACE MR0175 (Sour Gas Environments)
- EN 10204 3.1 Material Certification

Applications

✔️ High-pressure natural gas distribution
✔️ Coastal infrastructure reinforcement
✔️ Chemical plant structural supports
✔️ Architectural load-bearing elements