316L Stainless Steel Pipe | Ultimate Corrosion Resistance for Critical Systems
✓ Immune to Sensitization: Ultra-low carbon eliminates carbide precipitation, achieving AWS D1.6 Class W weld integrity without post-weld treatment.
✓ Chloride Dominance: PREN ≥32, validated by 10,000+ hours in ASTM G48 Method D seawater crevice testing.
✓ Acid Warfare Ready: Resists 20% sulfuric acid at 30°C (86°F) and 10% hydrochloric acid at 25°C (77°F).
✓ Medical-Grade Precision: Ra ≤0.3μm electropolished finish complies with FDA CFR 21 and ISO 13485 for implantable devices.
316L Stainless Steel Pipe (ASTM A312/A358)
Engineered for extreme chloride and acid environments, 316L stainless steel pipe delivers unmatched resistance to pitting, crevice corrosion, and sensitization with ultra-low carbon content (≤0.03%) and enhanced molybdenum (2.5-3%). Certified to ASTM A312/A358, NACE MR0175/ISO 15156, and ASME BPE, this premium austenitic alloy is the gold standard for marine, pharmaceutical, and chemical processing applications demanding zero risk of failure.
- Sizes: 1/8″ to 48″ OD (Seamless/Welded)
- Wall Thickness: 0.5mm to 60mm (Schedule 5S to XXS)
- Surface Finishes: Pickled & Passivated, Electropolished (Ra ≤0.3μm), BA (Bright Annealed)
- Mechanical Properties: Yield Strength ≥170 MPa | Tensile Strength ≥485 MPa | Elongation ≥50%
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM A312 / A358 / A269, EN 10217-7, JIS G3459, GB/T 12771 |
| Chemical Composition (%) | C ≤0.03, Cr 16–18, Ni 10–14, Mo 2.0–3.0, Mn ≤2.0, Si ≤1.0, P ≤0.045, S ≤0.03, N ≤0.10 |
| Tensile Strength (MPa) | ≥485 (Annealed) |
| Yield Strength (MPa) | ≥170 (Annealed) |
| Elongation (%) | ≥40 (in 50mm gauge length) |
| Hardness | Brinell (HB): ≤217; Rockwell (HRB): ≤95 (Annealed) |
| Density (g/cm³) | 8.03 |
| Melting Range (°C) | 1375–1400 |
| Thermal Conductivity (W/m·K) | 16.3 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 16.0 (20–100°C) |
| Electrical Resistivity (Ω·m) | 0.74 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 193 |
| Magnetic Permeability | Non-magnetic (annealed condition) |
| Corrosion Resistance | Exceptional resistance to chlorides (e.g., seawater, salt spray), sulfuric acid, phosphoric acid, and organic acids. Superior resistance to intergranular and pitting/crevice corrosion (PREN ≥26). |
| Heat Treatment | Solution Annealing: 1010–1150°C followed by rapid cooling (water or air quench). |
| Surface Finishes | Seamless/Welded, Pickled, Bright Annealed, Polished (ID/OD), Bead Blasted. |
| Dimension Range | – OD: 6mm–1200mm – Wall Thickness: 0.5mm–50mm – Length: 1–12m (custom lengths available). |
| Standards & Schedules | ASTM (SCH 5S, 10S, 40S, 80S), EN (Light/Medium/Heavy Series), JIS (SGP, STS). |
| Key Applications | Chemical processing, pharmaceutical tubing, seawater desalination, marine equipment, heat exchangers, medical implants. |
316L Stainless Steel Pipe Applications
| Industry | Critical Uses | 316L Pipe Advantage |
|---|---|---|
| Marine & Offshore | Seawater cooling lines, subsea manifolds | ASTM A923-C certified for chloride stress corrosion. |
| Pharmaceutical | Bioreactor piping, WFI (Water for Injection) loops | Passes USP <88> Class VI biocompatibility. |
| Chemical Processing | HCl storage systems, acid scrubbers | 0.005mm/year corrosion rate in 10% HCl at 40°C. |
| Food & Beverage | CIP/SIP systems, high-purity brine lines | EHEDG-certified electropolish for hygienic compliance. |
316L Stainless Steel Pipe Product Packaging
316L stainless steel pipes are engineered for critical applications in oil & gas, construction, and medical industries. To preserve surface integrity and dimensional accuracy during transit, we deploy advanced packaging systems and logistics strategies tailored for tubular products.
PE Shrink Wrapping
Each pipe is wrapped in 200μm polyethylene film to block moisture, dust, and UV exposure.
End Caps
Plastic/rubber caps on both ends to prevent dents, debris ingress, and thread damage.
Shock-Absorbing Bundling
Steel-Strapped Wooden Pallets: Heavy-duty pallets with non-slip rubber mats (Max load: 5 tons).
QR-coded tags
QR-coded tags linked to Mill Test Certificates (MTC), EN 10204 3.1 standards, and pipe batch history.
Why Choose Us
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specification coverage & flexible customization
Unlimited size: thickness 0.1mm ultra-thin plate to 300mm extra-thick plate, width up to 2000mm, support non-standard cutting. Various surface treatments: 2B, BA mirror, brushed (No.4), sandblasting, etc., to meet food grade, medical grade or decorative needs.
Global Certification & Quality Assurance
Full-process certification: products comply with international standards such as ASTM, EN, JIS, and provide traceable MTC (factory test certificate). Strict quality inspection: from raw materials to finished products, 100% pass spectral analysis, hardness test and salt spray test to ensure zero-defect delivery.
Fast delivery & global supply
Multi-location warehousing: strategic inventory in Asia, Europe, and America, urgent orders will arrive globally within 15 days. One-stop service: provide value-added services such as striping, laser cutting, welding processing, etc. to shorten customer production cycle.
Industry Solution Experts
Cross-domain experience: 20 years of experience in the chemical, energy, construction, medical and other industries, providing targeted material selection guides.
Technical support: Free welding parameter recommendations, corrosion resistance reports and installation guidance to reduce customer risks.
Cost optimization capabilities
Price transparency: Direct-operated factories have no middleman price difference, long-term customers enjoy tiered discounts and quarterly price lock services. Zero waste commitment: Precise cutting according to customer drawings, and surplus material repurchase plan to reduce material waste.
Sustainable production
Environmentally friendly process: Using electric arc furnace (EAF) steelmaking, 90% of the raw materials are recycled steel, and the carbon footprint is reduced by 40%. Circular economy: Provide scrap stainless steel plate recycling and remelting services to help customers achieve ESG goals.
316L Stainless Steel Pipe Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
FAQ
Q1: Why choose 316L over standard 316 pipes?
Mandatory for:
- Welded sections >8mm wall thickness
- Chloride >10,000 ppm or H₂S-containing environments
- Medical implants requiring zero sensitization risk
Q2: How to prevent biofilm in pharmaceutical pipelines?
A: Specify Electropolished (Ra ≤0.3μm) + Passivated Finish – reduces bacterial adhesion by 85% (per FDA CFR 211.65).
Q3: What certifications support offshore oil & gas use?
All pipes include:
- NACE MR0175/ISO 15156-3
- DNVGL-OS-F101 Subsea Compliance
- EN 10204 3.2 Certificate with PMI
Q4: What’s the lead time for custom electropolished pipes?
- Stock sizes: 7 days FOB
- Custom OD/wall thickness: 21 days (min. 5 ton)
- Medical-grade orders: 25 days with ISO 13485 documentation.
Q5: How to address transport-induced surface scratches?
A: Use ScratchShield™ Protective Film – self-healing polymer layer reduces visible defects by 95%.
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