304 Stainless Steel Pipe | Versatile Corrosion Resistance for Industrial Excellence
✓ All-Purpose Corrosion Defense: Survives 500+ hours in ASTM B117 salt spray testing, ideal for coastal and chemical exposure.
✓ Seamless & Welded Versatility: Available in schedules 5S to 80S, with OD tolerance ±0.1mm for precision installations.
✓ Hygienic Compliance: Ra ≤0.8μm internal finish meets FDA CFR 175.300 and 3-A Sanitary Standards for food-grade use.
✓ Thermal Resilience: Operates from **-196°C to 800°C (-321°F to 1472°F)** with minimal scaling.
304 Stainless Steel Pipe (ASTM A312/A269)
A cornerstone of industrial fluid systems, 304 stainless steel pipe delivers exceptional corrosion resistance, weldability, and structural integrity across diverse environments. With 18% chromium and 8% nickel alloy composition, these pipes excel in mildly corrosive conditions, from food processing to architectural frameworks. Certified to ASTM A312/A269, EN 10217-7, and ASME SA-312, they are the go-to choice for applications demanding hygiene, durability, and cost-efficiency.
- Sizes: 1/8″ to 24″ OD (Seamless/Welded)
- Wall Thickness: 0.5mm to 50mm (Schedule 5S to XXS)
- Surface Finishes: Annealed, Polished (180-600 grit), or Pickled & Passivated
- Mechanical Properties: Yield Strength ≥205 MPa | Tensile Strength ≥515 MPa | Elongation ≥35%
| Parameter Category | Value/Description |
|---|---|
| Material Standard | ASTM A312 / A358 / A269, EN 10217-7, JIS G3459, GB/T 12771 |
| Chemical Composition (%) | C ≤0.08, Cr 18–20, Ni 8–10.5, Mn ≤2.0, Si ≤1.0, P ≤0.045, S ≤0.03 |
| Tensile Strength (MPa) | ≥515 (Annealed) |
| Yield Strength (MPa) | ≥205 (Annealed) |
| Elongation (%) | ≥40 (in 50mm gauge length) |
| Hardness | Brinell (HB): ≤201; Rockwell (HRB): ≤92 (Annealed) |
| Density (g/cm³) | 8.03 |
| Melting Range (°C) | 1400–1450 |
| Thermal Conductivity (W/m·K) | 16.2 (at 20°C) |
| Thermal Expansion (10⁻⁶/°C) | 17.2 (20–100°C) |
| Electrical Resistivity (Ω·m) | 0.72 × 10⁻⁶ (at 20°C) |
| Elastic Modulus (GPa) | 193 |
| Magnetic Permeability | Non-magnetic (annealed condition) |
| Corrosion Resistance | Excellent resistance to general corrosion, oxidizing acids, and organic acids. Moderate resistance to chlorides. |
| Heat Treatment | Annealing: 1010–1120°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 | Food processing pipelines, chemical equipment, architectural structures, HVAC systems, water treatment, pharmaceutical tubing. |
304 Stainless Steel Pipe Applications
| Industry | Critical Uses | 304 Pipe Advantage |
|---|---|---|
| Food & Beverage | CIP/SIP fluid lines, brewery transfer pipes | Electropolished interiors resist bacterial buildup. |
| Chemical Plants | Low-pressure acid transfer lines, venting | Withstands 10% nitric acid at 50°C (122°F). |
| Architecture | Handrails, HVAC condensate drains | 0.5mm/m straightness tolerance for seamless installations. |
| Pharmaceutical | Clean steam lines, WFI (Water for Injection) distribution | Complies with FDA CFR 211.65 and EU GMP Annex 1. |
304 Stainless Steel Pipe Product Packaging
304 stainless steel pipes (Grades 304/316Ti, ASTM A312/A358 compliant) 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.
304 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: How does 304 differ from 304L pipes in welding applications?
A: 304L’s 0.03% max carbon prevents sensitization in welded thick walls (>6mm). Use 304 for thin-wall, non-welded, or high-temperature (>450°C) systems.
Q2: What surface finish ensures sanitary compliance?
A: Electropolished (Ra ≤0.5μm) + Passivated per ASTM A967 Method C – meets 3-A Sanitary Standards for dairy/pharma.
Q3: What certifications support pressure vessel use?
All pipes include:
- EN 10204 3.1 MTC with PMI
- ASME B31.3 Process Piping Compliance
- ASTM E2906-13 Passivation Report
Q4: What’s the lead time for custom-sized pipes?
- Stock sizes: 7 days FOB
- Custom OD/wall thickness: 15 days (min. 1000kg)
- Sanitary-grade orders: 20 days with cleanroom certification.
Q5: How to prevent crevice corrosion in threaded joints?
A: Specify PTFE tape + Teflon sealant – reduces corrosion risk by 90% vs dry threading
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