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Stainless Steel Pipe | 304L/316L Food Processing Tubing
Stainless Steel Pipe | 304L/316L Food Processing Tubing
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Stainless Steel Pipe | 304L/316L Food Processing Tubing
Product Specifications
| Dimension/Property | Specification |
|---|---|
| Material Grade | 304L / 316L (Low Carbon, Sanitary Grade) |
| Outer Diameter (OD) | 6mm–2500mm (1/8"–100") |
| Wall Thickness | 0.6mm–40mm (Customizable per stainless steel pipe schedule table) |
| Length | 6m (Standard) / Custom Lengths (Up to 12m) |
| Production Method | Seamless or Welded (TIG Welded for Precision) |
| Surface Finish | Electropolished, Mirror (Ra ≤0.8μm), Brushed (2B), Sanitary (No Pores/Scratches) |
| Hardness | Rockwell B: 70–90 |
| Melting Point | 1400–1450°C (2552–2642°F) |
Mechanical Properties
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 485–621 MPa (304L: 485 MPa; 316L: 515 MPa) |
| Yield Strength | 170–290 MPa (304L: 170 MPa; 316L: 290 MPa) |
| Elongation (%) | 30–55% (High Ductility) |
| Density | 8.0 g/cm³ |
| Temperature Resistance | -40°C to 925°C (Continuous Use) |
Chemical Composition
| Element | 304L (%) | 316L (%) |
|---|---|---|
| Chromium (Cr) | 18.0–20.0 | 16.0–18.0 |
| Nickel (Ni) | 8.0–12.0 | 10.0–14.0 |
| Molybdenum (Mo) | — | 2.0–3.0 |
| Carbon (C) | ≤0.03 | ≤0.03 |
| Manganese (Mn) | ≤2.0 | ≤2.0 |
Key Features & Applications
-
Sanitary Design:
- Electropolished inner surfaces (Ra ≤0.8μm) minimize bacterial adhesion and ensure hygienic fluid transport. Ideal for stainless steel plumbing pipe systems in dairy, brewing, and pharmaceutical industries.
- Passivated surfaces resist scaling and chemical corrosion, compliant with FDA and EHEDG standards.
-
Corrosion Resistance:
- 316L’s molybdenum content enhances resistance to chlorides, acids, and saltwater, making it suitable for marine and chemical environments.
- 304L offers cost-effective corrosion resistance for food processing and general-purpose applications.
-
Customization:
- Available in stainless steel pipe schedule table standards (Sch 5S to Sch 80S) for pressure-specific needs.
- Compatible with stainless steel smoker pipe designs for high-temperature exhaust systems.
-
Certifications:
- ASTM A312, ASME SA213, ISO 1127, and 3.1 Mill Certificates ensure traceability and quality.
Technical Insights
Tensile & Bend Strength
304L and 316L stainless steel pipes exhibit exceptional tensile strength (485–621 MPa) and yield strength (170–290 MPa) due to their austenitic structure and cold-working adaptability. The high elongation (30–55%) allows bending and forming without cracking, critical for stainless steel smoker pipe fabrication. For welded joints, low carbon content (<0.03%) prevents carbide precipitation, maintaining corrosion resistance post-welding.
Weight Calculation Formula
Calculate pipe weight using:
Example: A 100mm OD pipe with 5mm wall thickness weighs:
.
Marking & Identification
Pipes are laser-marked with:
- Grade (304L/316L)
- ASTM Standard (e.g., A312)
- OD, Wall Thickness, and Heat Number.
Why Stainless Steel Can Rust?
Despite inherent corrosion resistance, 304L/316L may corrode under extreme conditions:
- Chloride Exposure: Prolonged contact with seawater or de-icing salts degrades the passive layer.
- Mechanical Damage: Scratches or improper welding expose iron to oxidation.
- High Temperatures: Carbide precipitation in welded zones (mitigated by low-carbon 304L/316L).
Preventive measures include passivation, regular cleaning, and using compatible stainless steel plumbing pipe fittings.
Why Choose Our Stainless Steel Pipes?
- Certified Excellence: ISO 9001, FDA, and EHEDG compliance with full traceability.
- Rapid Delivery: 15-day lead time for standard sizes; 5-day stock availability.
- Global Expertise: Serving food, pharmaceutical, and marine industries since 2015.
- Custom Solutions: Tailored OD, thickness, and surface finishes (mirror, electropolished).
- Cost Efficiency: Competitive pricing with bulk-order discounts.
