DIN11850 Sanitary Stainless Steel Tubing
DIN 11850 (German Standard) specify austenitic stainless steel seamless and welded tubes for hygienic applications, particularly in the food, beverage, pharmaceutical, and chemical industries. These standards ensure high cleanliness, corrosion resistance, and smooth surfaces for sanitary processes.
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| Production Standard: | DIN11850 |
| Material Grades: | SS304(1.4301), SS316L(1.4404) |
| Tube OD: | DN10-DN250, 12-254mm |
| Wall Thickness: | 1.5mm, 2.0mm |
| Tube Type: | Seamless or Welded |
| Surface: | ≤20μ-in Ra (0.5 μm) ID, ≤30μ-in Ra (0.8μm) OD |
| Test Content: | Flange & Flaring Test, Reverse Flattening Test, Roughness Test, Hydrostatic/Pneumatic Test, Eddy Current Test (NDT), Surface Finish Verification, Dimensional Inspection, MaterialCertification |
| Certificate: | ISO 9001:2015, PED 2014/68/EU, AD 2000-WO |
- Production Standard:
- Material Grades:
- Tube OD:
- Thickness:
- Tube Type:
- Surface:
- Test Content:
- Certificate:
- DIN11850
- SS304(1.4301) , SS316L(1.4404)
- DN10-DN250, 12-254mm
- 1.5mm, 2.0mm
- Seamless or Welded
- ≤20μ-in Ra (0.5 μm) ID, ≤30μ-in Ra (0.8 μm) OD
- Flange & Flaring Test, Reverse Flattening Test, Roughness Test, Hydrostatic/Pneumatic Test, Eddy Current Test (NDT), Surface Finish Verification, Dimensional Inspection, Material Certification
- ISO 9001:2015, PED 2014/68/EU, AD 2000-WO
| Size | Tube OD | Thickness | Length | |||
|---|---|---|---|---|---|---|
| DN | mm | mm | (m) | |||
| DN10 | 12 | 1.5 | 4/6 | |||
| DN15 | 18 | 1.5 | 4/6 | |||
| DN20 | 22 | 1.5 | 4/6 | |||
| DN25 | 28 | 1.5 | 4/6 | |||
| DN32 | 34 | 1.5 | 4/6 | |||
| DN40 | 40 | 1.5 | 4/6 | |||
| DN50 | 52 | 1.5 | 4/6 | |||
| DN65 | 70 | 2.0 | 4/6 | |||
| DN80 | 85 | 2.0 | 4/6 | |||
| DN100 | 104 | 2.0 | 4/6 | |||
| DN125 | 129 | 2.0 | 4/6 | |||
| DN150 | 154 | 2.0 | 4/6 | |||
| DN200 | 204 | 2.0 | 4/6 | |||
| DN250 | 254 | 2.0 | 4/6 |
| Element | 304 (ASTM A270/A269) | 316L (ASTM A270/A269) | Key Difference |
|---|---|---|---|
| Chromium (Cr) | 18.0–20.0% | 16.0–18.0% | 316L has slightly less Cr but compensates with Mo. |
| Nickel (Ni) | 8.0–10.5% | 10.0–14.0% | Higher Ni in 316L improves acid resistance. |
| Molybdenum (Mo) | Not Present | 2.0–3.0% | Mo in 316L resists chlorides & harsh chemicals (e.g., bleach, salt). |
| Carbon (C) | ≤0.08% | ≤0.03% | 316L’s ultra-low C prevents weld decay. |
| Manganese (Mn) | ≤2.0% | ≤2.0% | Similar in both grades. |
| Silicon (Si) | ≤1.0% | ≤1.0% | Similar in both grades. |
| Phosphorus (P) | ≤0.045% | ≤0.045% | Minimized for weldability. |
| Sulfur (S) | ≤0.03% | ≤0.03% | Minimized for corrosion resistance. |
| Iron (Fe) | Balance (~67–71%) | Balance (~62–68%) | 316L has less Fe due to higher Ni/ |
