1.4404 Grade Pharmaceutical Stainless Steel Pipe
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If you are looking for high-purity, corrosion-resistant stainless steel piping for pharmaceutical or food-grade applications, we offer precision-sized, reliable 1.4404 grade pharmaceutical stainless steel tubes. 1.4404 stainless steel, also known as 316L stainless steel, contains 16-18% chromium, 10-14% nickel, and 2-3% molybdenum, providing excellent resistance to pitting, crevice corrosion, and chemical corrosion, even in highly corrosive or demanding hygienic environments. These pipes typically have a tensile strength of ≥500 MPa and excellent ductility, making them ideal for applications requiring hygienic, contamination-free fluid transfer systems.
Our 1.4404 stainless steel polished tubes are manufactured using seamless or welded processes and undergo pickling and passivation treatment to ensure a smooth inner surface, uniform wall thickness, tight dimensional tolerances, and low surface roughness (Ra ≤ 0.4 μm), all critical for meeting hygiene and cleanroom standards. To guarantee quality, each batch undergoes chemical composition testing, mechanical property verification, hydrostatic testing, surface inspection, and non-destructive testing (UT/ET), and is supplied with a complete Material Test Certificate (MTC, EN 10204 3.1), with third-party inspection services available.
1.4404 Grade Pharmaceutical Stainless Steel Pipe Specification
| Material | Stainless Steel 304/304L/316L |
| Shape | Round / Square / Rectangle |
| Production Standards | ASTM A270 , AS 1528.1 , EN 10357 , DIN 11850 ,ISO 2037 , JIS G3447, KS D 3585 and so on. |
| Outer Diameter | 16mm - 2000mm ; |
| Thickness | 0.8mm - 20 mm ; |
| Length | 6 Meters - 18.3 Meters ; As customers' request ; |
| Tolerance | According to the Standard , +/-10% Commonly ; |
| Surface Treatment | 180#, 320#, 400# Satin / Hairline, Bright Anneal, Pickle,400#, 500#, 600# or 800# Mirror finish |
| Test | Flaring test ; Flattening test ; Bending Test ; Hydraulic Test ; Eddy Current test |
| Design | OEM / ODM / Customized |
| Certificate | ISO9001 ; ISO14001; ISO 18001; TUV ; |
1.4404 / 316L Chemical Composition (wt.%)
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 16.5 – 18.5 |
| Nickel (Ni) | 10.0 – 13.0 |
| Molybdenum (Mo) | 2.0 – 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.015 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 485 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 215 HB |
| Condition | Solution-treated |
Surface Roughness (Ra) Grades
Pharmaceutical piping requires extremely smooth inner surfaces to minimize bacterial adhesion and residue.
| Polishing Grade | Surface Roughness Ra | Typical Applications |
|---|---|---|
| Pharmaceutical Standard | ≤ 0.6 μm | Purified water, infusion systems |
| High-End Pharmaceutical | ≤ 0.4 μm | Biopharmaceutical, sterile systems |
With extensive experience in international shipping, our 1.4404 pipes have been exported to Europe, the UK, Southeast Asia, and the Middle East, supporting the pharmaceutical, biotechnology, and food processing industries. They are widely used in pharmaceutical production lines, food and beverage systems, chemical reactors, sanitary piping networks, and cleanroom fluid transfer systems, providing safe, durable, and reliable solutions for critical applications.
If you have project requirements for 1.4404 stainless steel pipes, we welcome your order. GNEE has a large inventory of popular products for you to choose from. Available in both seamless and welded forms, please contact our factory immediately for detailed chemical composition information and free samples. We offer competitive prices and excellent service.
The pipes are packaged with waterproof paper and steel straps, meeting standard export sea freight packaging requirements, suitable for various transportation methods, or customized according to customer requirements.
