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Stainless Steel Pipe | 304L/316L OEM Custom Fabrication
Stainless Steel Pipe | 304L/316L OEM Custom Fabrication
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Stainless Steel Pipe | 304L/316L OEM Custom Fabrication
Product Specifications
Material Grades: 304L (UNS S30403) / 316L (UNS S31603)
Standards: ASTM A312 (seamless/welded), ASTM A554, ASME B36.19
Certifications: ISO 9001, PED 2014/68/EU, TÜV, SGS
| Property | 304L | 316L |
|---|---|---|
| Outer Diameter (OD) | 6 mm – 610 mm | 6 mm – 610 mm |
| Wall Thickness | 0.5 mm – 12.7 mm | 0.5 mm – 12.7 mm |
| Hardness (Rockwell B) | ≤90 HRB | ≤95 HRB |
| Hardness (Vickers) | ≤200 HV | ≤220 HV |
| Surface Finish | Annealed, Pickled, Mirror Polish | Electropolished, Satin |
| Tolerance | OD ±0.1%, WT ±10% | OD ±0.1%, WT ±10% |
| Schedule Options | SCH 5S–160 | SCH 5S–160 |
Technical Attributes
Tensile & Bend Strength
304L and 316L stainless steel pipes exhibit tensile strengths of ≥485 MPa and yield strengths of ≥170 MPa, ensuring structural integrity under high-pressure industrial applications like stainless steel exhaust flex pipe systems. The elongation (≥40%) allows seamless bending into complex layouts without cracking. For shed 10 stainless steel pipe (SCH 10S), these grades maintain stability at temperatures up to 870°C, ideal for heat exchangers and chemical processing pipelines.
Weight Calculation Formula
Weight per meter (kg/m) = (OD – Wall Thickness) × Wall Thickness × 0.0248
Example: For a shed 10 stainless steel pipe (OD 114.3 mm, thickness 3.05 mm):
Weight = (114.3 – 3.05) × 3.05 × 0.0248 ≈ 8.2 kg/m .
Identification Marking
All pipes are laser-etched with:
- ASTM/ASME standard (e.g., ASTM A312).
- Grade (304L/316L), OD, thickness, heat number, and manufacturer’s logo.
- Traceability codes compliant with EN 10204 3.1 standards.
Why Does Stainless Steel Rust?
Although 316L offers superior corrosion resistance due to 2-3% molybdenum, both grades may corrode under extreme conditions:
- Chloride exposure: Prolonged contact with seawater (>500 ppm chloride) or acidic chemicals disrupts the chromium oxide layer.
- Mechanical damage: Scratches from improper handling or abrasive tools expose unprotected metal to oxidation.
- Galvanic corrosion: Direct contact with carbon steel or copper in humid environments accelerates rust formation.
Manufacturing & Customization
Processes:
- Cold drawing: Enhances dimensional precision for stainless steel bulkhead pipe fitting applications.
- TIG welding: Seamless joints for high-pressure systems like stainless steel exhaust flex pipe in automotive and marine industries.
- Solution annealing: Heated to 1,040–1,100°C to eliminate carbide precipitation during welding.
Custom Options:
- Threading: NPT, BSPT, or custom threads for secure connections.
- Surface finishes: Electropolished (Ra ≤0.5 μm) for hygienic industries or mirror polish for architectural use.
Applications
- Exhaust systems: Corrosion-resistant stainless steel exhaust flex pipe for automotive and industrial fume extraction.
- Marine & chemical plants: Stainless steel bulkhead pipe fitting solutions for saltwater and acidic environments.
- Structural frameworks: Shed 10 stainless steel pipe for lightweight yet durable construction.
Why Choose Our Stainless Steel Pipes?
- Material Integrity: Full traceability with EN 10204 3.1 Mill Test Certificates and third-party SGS/BV inspections.
- Custom Solutions: Tailored stainless steel bulkhead pipe fitting and SCH 10–160 pipes for ASTM/ASME compliance.
- Global Inventory: 5,000+ tons of ready stock, including shed 10 stainless steel pipe and seamless variants.
- Technical Support: 24/7 engineering guidance on welding, cutting, and corrosion prevention.
- Sustainability: 100% recyclable material with ISO 14001-certified production.
