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Stainless Steel Pipe | 316L Desalination Plant Tubing
Stainless Steel Pipe | 316L Desalination Plant Tubing
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Stainless Steel Pipe | 316L Desalination Plant Tubing
Product Specifications
Material Grade: 316L (UNS S31603)
Standards: ASTM A312, ASME SA312, EN 10217-7
Certifications: ISO 9001, PED 2014/68/EU, TÜV
| Property | Value |
|---|---|
| Outer Diameter (OD) | 12.7 mm – 610 mm (including stainless steel pipe diameters customization) |
| Wall Thickness | 0.5 mm – 12.7 mm (adjustable for SCH 5S–160) |
| Hardness (Rockwell B) | ≤95 HRB |
| Hardness (Vickers) | ≤220 HV |
| Surface Finish | Pickled, Annealed, Electropolished |
| Tolerance | OD ±0.1%, WT ±10% |
| Chemical Composition | Cr: 16–18%, Ni: 10–14%, Mo: 2–3%, C ≤0.03% |
Technical Attributes
Tensile & Bend Strength
316L stainless steel exhibits tensile strength ≥485 MPa and yield strength ≥170 MPa, ensuring structural integrity in high-pressure desalination systems. Its elongation (≥40%) allows seamless bending for complex pipeline layouts, critical for seawater reverse osmosis (SWRO) plants. Compared to stainless steel pipe ss 304, 316L’s molybdenum content enhances chloride resistance, making it ideal for marine environments.
Weight Calculation Formula
Weight per meter (kg/m) = (OD – Wall Thickness) × Wall Thickness × 0.0248
Example: For a stainless steel pipe diameters of 219.1 mm (8.625") and thickness 6.35 mm:
Weight = (219.1 – 6.35) × 6.35 × 0.0248 ≈ 32.1 kg/m.
Identification Marking
All pipes are laser-etched with:
- ASTM/ASME standard (e.g., ASTM A312).
- Grade (316L), OD, thickness, heat number, and manufacturer’s logo.
- Traceability codes compliant with EN 10204 3.1 standards.
Why Does Stainless Steel Rust?
Despite 316L’s superior corrosion resistance, rust can occur under extreme conditions:
- Chloride exposure: Prolonged contact with seawater (>500 ppm chloride) degrades the passive chromium oxide layer.
- Mechanical damage: Improper handling or abrasive cutting tools expose unprotected metal to oxidation.
- Galvanic corrosion: Direct contact with carbon steel in humid environments accelerates rust formation.
Manufacturing & Customization
Processes:
- Cold drawing: Enhances dimensional precision for seamless integration with stainless steel pipe diameters standards.
- TIG welding: Seamless joints for high-pressure desalination pipelines.
- Solution annealing: Heated to 1,040–1,100°C to eliminate carbide precipitation during welding.
Custom Options:
- Threading: NPT/BSPT threads for secure connections in modular desalination units.
- Hygienic finishes: Electropolished interiors (Ra ≤0.5 μm) to prevent biofilm growth.
Applications
- Desalination plants: Resists chloride-induced pitting in SWRO systems.
- Marine pipelines: Corrosion-proof tubing for seawater intake/discharge.
- Chemical processing: Handles acidic cleaning agents in plant maintenance.
Why Choose Our 316L 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 pipe diameters and schedules (SCH 10S–160) for ASTM/ASME compliance.
- Global Inventory: 5,000+ tons of ready stock from our stainless steel pipe manufacturer network.
- Technical Support: 24/7 engineering guidance on welding, cutting, and corrosion prevention.
- Sustainability: 100% recyclable material with ISO 14001-certified production.
