StockSteel
Premium Stainless Steel Pipe: Large-Diameter 304 for Medical
Premium Stainless Steel Pipe: Large-Diameter 304 for Medical
Couldn't load pickup availability
Premium 304 Stainless Steel Pipe for Medical & Food Industries
Product Specifications
| Parameter | Details |
|---|---|
| Material Grade | stainless steel pipe: AISI 304 (UNS S30400) |
| Outer Diameter | 21.3 mm – 1016 mm (DN15 – DN1000) |
| Wall Thickness | 0.8 mm – 26 mm |
| Length | 6 meters (standard), customizable up to 12 meters |
| Surface Finish | No.1 (Hot-rolled), 2B (Cold-rolled), BA (Bright Annealed), No.4 (Brushed), Mirror Polished |
| Hardness (HRB) | ≤ 183 MPa |
| Certifications | ASTM A312, EN 10216-5, JIS G3459, GB/T 12771 |
| Ends | Plain, Beveled, Threaded (NPT/BSP) |
Key Attributes
| Property | Value / Description |
|---|---|
| Tensile Strength | ≥ 520 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Corrosion Resistance | Excellent resistance to acids, chlorides, and organic compounds; ideal for stainless steel exhaust pipe systems. |
| Temperature Range | -200°C to +870°C (intermittent use) |
| Hygienic Design | Smooth, non-porous surface complies with FDA and EHEDG standards for food and medical use. |
Manufacturing Process
| Stage | Technology & Quality Control |
|---|---|
| Material Selection | High-purity 304 stainless steel billets with 18% Cr, 8% Ni, and low carbon content (≤0.08%). |
| Forming | Cold drawing or hot extrusion for seamless stainless steel pipe; TIG welding for welded pipes. |
| Surface Treatment | Electrolytic polishing, pickling, or passivation to enhance corrosion resistance. |
| Testing | Hydrostatic pressure, ultrasonic, and eddy current tests to ensure leak-proof performance. |
Technical Explanations
1. Tensile & Bend Strength
Our stainless steel pipe achieves a tensile strength of ≥520 MPa and yield strength of ≥205 MPa, ensuring structural integrity under high-pressure conditions. These properties make it suitable for stainless steel exhaust pipe systems requiring resistance to vibration and thermal expansion. Bend strength is enhanced through precise cold-working processes, reducing deformation risks in complex installations.
2. Identification & Marking
Each pipe is laser-etched with the following identifiers:
- Grade (e.g., 304)
- Manufacturer code
- Production batch
- Compliance standards (e.g., ASTM, EN)
This traceability ensures quality control for stainless steel pipe fittings and end-user safety.
3. Weight Calculation Formula
Calculate pipe weight (kg/m) using:
Weight = (OD – WT) × WT × 0.02466
Where:
- OD = Outer Diameter (mm)
- WT = Wall Thickness (mm)
Example: For a 100 mm OD pipe with 5 mm thickness, weight = (100 – 5) × 5 × 0.02466 = 11.71 kg/m.
4. Why Stainless Steel Rusts
While 304 stainless steel is highly corrosion-resistant, rust may occur due to:
- Chloride Exposure: Chlorine ions in seawater or cleaning agents disrupt the chromium oxide layer.
- Mechanical Damage: Scratches or abrasions expose the iron substrate to oxidation.
- Low Oxygen Environments: Poor ventilation inhibits passive layer regeneration.
Regular cleaning and passivation can mitigate these risks.
Why Choose Our Stainless Steel?
-
Medical & Food-Grade Compliance
Our stainless steel pipe meets ISO 13485 (medical devices) and NSF/3-A standards (food processing), ensuring safety in sterile environments. -
Customization Flexibility
Tailor-made diameters, lengths, and surface finishes for stainless steel exhaust pipe and stainless steel pipe fittings applications. -
Global Certification
Certified by TÜV, SGS, and PED for global export readiness. -
Durability & Cost Efficiency
Reduced maintenance and long service life lower total ownership costs. -
Sustainable Manufacturing
Eco-friendly production with 95% recyclable materials.
