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Stainless Steel Pipe | 304L/316L Architectural Handrail Tubes
Stainless Steel Pipe | 304L/316L Architectural Handrail Tubes
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Stainless Steel Pipe | 304L/316L Architectural Handrail Tubes
Product Specifications
Material Grade: 304L (UNS S30403) / 316L (UNS S31603)
Standards: ASTM A312 (seamless/welded), ASTM A554 (architectural tubing), EN 10217-7
Certifications: ISO 9001, PED 2014/68/EU, TÜV
| Property | 304L | 316L |
|---|---|---|
| Outer Diameter (OD) | 12.7 mm – 219.1 mm | 12.7 mm – 219.1 mm |
| Wall Thickness | 0.8 mm – 12.7 mm | 0.8 mm – 12.7 mm |
| Hardness (Rockwell B) | ≤90 HRB | ≤95 HRB |
| Hardness (Vickers) | ≤200 HV | ≤220 HV |
| Surface Finish | Mirror, Brushed, Satin | Mirror, Brushed, Satin |
| Tolerance | OD ±0.1%, WT ±10% | OD ±0.1%, WT ±10% |
Technical Attributes
Tensile & Bend Strength
304L and 316L stainless steel exhibit tensile strengths of ≥485 MPa and yield strengths of ≥170 MPa, ensuring structural integrity for handrails in high-traffic areas. Their ductility (≥40% elongation) allows seamless bending into curved designs without cracking. For mig welding stainless steel exhaust pipe applications, these grades resist thermal fatigue and maintain dimensional stability at temperatures up to 870°C.
Weight Calculation Formula
Weight per meter (kg/m) = (OD – Wall Thickness) × Wall Thickness × 0.0248
Example: A 4 in stainless steel exhaust pipe (OD 101.6 mm, thickness 2.0 mm):
Weight = (101.6 – 2.0) × 2.0 × 0.0248 ≈ 4.93 kg/m.
Identification Marking
All tubes are laser-etched with:
- ASTM/EN standard (e.g., ASTM A554).
- Grade (304L/316L), OD, thickness, heat number, and manufacturer’s logo.
Why Does Stainless Steel Rust?
While 316L offers superior corrosion resistance due to 2-3% molybdenum, both grades may rust under extreme conditions:
- Chloride exposure: Prolonged contact with saltwater (>500 ppm chloride) damages the chromium oxide layer.
- Mechanical damage: Scratches or improper how to cut stainless steel pipe techniques (e.g., abrasive wheels without cooling) can expose raw metal to oxidation.
- High-temperature oxidation: Sustained use above 870°C accelerates scaling in 304L.
Manufacturing & Customization
Processes:
- Cold drawing: Enhances surface smoothness for architectural aesthetics.
- TIG welding: Delivers seamless joints for mig welding stainless steel exhaust pipe systems.
- Electropolishing: Reduces surface roughness (Ra ≤0.5 μm) for hygienic environments.
Custom Options:
- Cutting: Precision plasma/laser cutting for 4 in stainless steel exhaust pipe or complex handrail profiles.
- Bending: CNC mandrel bending with radii ≥1.5× OD.
Applications
- Architectural handrails: Corrosion-resistant for coastal buildings.
- HVAC systems: Compatible with 4 in stainless steel exhaust pipe for fume extraction.
- Industrial frameworks: Load-bearing structures in chemical plants.
Why Choose Our Stainless Steel Tubes?
- Material Integrity: 100% traceability with Mill Test Certificates (EN 10204 3.1).
- Custom Solutions: Tailored mig welding stainless steel exhaust pipe and handrail kits.
- Global Compliance: Meets ASTM, EN, and AS/NZS standards for international projects.
- Technical Support: 24/7 engineering guidance on how to cut stainless steel pipe or design optimization.
- Sustainability: 100% recyclable with eco-friendly packaging.
