Hygienic, pharma & UHP tubes
We supply hygienic stainless tubes and fittings for food, beverage, dairy, cosmetics, pharmaceutical and biotech lines, and UHP versions for the semiconductor industry and high-purity gases. Tubes come in 1.4301, 1.4307, 1.4404 and 1.4435 to EN 10357, DIN 11866, ASTM A269 / A270 and ASME BPE, with fittings to DIN 11852, DIN 11865 and SMS. The inside surface is polished or electropolished to the roughness you require.
- Sourced direct from manufacturers
- No minimum order quantity
- The complete package in one quote
Specification
- Outside diameter
- 15 – 204 mm
- Wall thickness
- 1 – 2 mm
Material and standards
- Standards
- EN 10357 · DIN 11866 · ASTM A269 / A270 · ASME BPE · DIN 11852 · SMS
- Material grades
- 1.4301 · 1.4307 · 1.4404 · 1.4435
Overview
- Grades: 1.4301, 1.4307, 1.4404, 1.4435.
- Standards: EN 10357, DIN 11866, ASTM A269 / A270, ASME BPE; fittings to DIN 11852, DIN 11865 and SMS.
- Surfaces: inside polished or electropolished to the required roughness.
Why the surface matters
In hygienic lines the surface matters as much as the material. A smooth, crevice-free inner surface resists deposits and microbial adhesion, so the line is easier to clean and sterilise. Inner roughness is specified as Ra. Typical levels:
- Ra ≤ 0.8 µm, polished: food, beverage, CIP;
- Ra ≤ 0.6 µm, electropolished: more demanding hygienic duty;
- Ra ≤ 0.4 µm or ≤ 0.25 µm, electropolished: pharma, biotech, high-purity gases.
Pharma and UHP versions
Pharmaceutical and semiconductor tubes and fittings also differ in cleanliness, not only in surface:
- electropolished inner surface;
- oil- and grease-free execution;
- nitrogen-filled, capped tubes;
- cleanroom packaging.
Fitting ends are prepared for orbital welding. Manifolds and flexible electropolished corrugated hose are also available.
Size series
- EN 10357 / DIN 11866: the European hygienic series, in metric and inch versions.
- ASME BPE: the typical US standard for pharmaceutical projects.
Always match the size series to the existing system and valves.
What to include in your RFQ:
- size series;
- grade;
- inner and outer surface with Ra value;
- electropolishing;
- cleanliness requirement;
- certificate;
- packaging.
Frequently asked questions
How is a hygienic tube different from a standard stainless tube?
In its size series, its tighter tolerances and above all the quality of the inner surface. A hygienic tube is designed for cleanability.
When is 1.4435 required instead of 1.4404?
When the design calls for a lower-ferrite, especially clean material. This is typical for pharmaceutical or critical hygienic applications.
Size table
| OD (mm) | Wall (mm) |
|---|---|
| 15 | 1 |
| 18 | 1–1,5 |
| 19,05 | 1,5 |
| 22 | 1,2–1,5 |
| 23 | 1,5 |
| 25 | 1,2–1,25 |
| 28 | 1,2–1,5 |
| 29 | 1,5 |
| 32 | 1,25 |
| 33 | 1,5 |
| 34 | 1,5 |
| 35 | 1,5 |
| 38 | 1,2–1,5 |
| 38,1 | 1,5 |
| 40 | 1–1,5 |
| 41 | 1,5 |
| 42 | 1,5 |
| 43 | 1,5 |
| 50,8 | 1,2–1,5 |
| 51 | 1,25 |
| 52 | 1,5 |
| 53 | 1,5 |
| 54 | 1,5 |
| 63 | 1,5 |
| 63,5 | 1,5 |
| 70 | 1,5–2 |
| 73 | 1,5 |
| 76,1 | 1,5–2 |
| 83 | 1,5 |
| 85 | 2 |
| 88,9 | 2 |
| 101,6 | 2 |
| 103 | 1,5 |
| 104 | 2 |
| 108 | 2 |
| 123 | 1,5 |
| 129 | 2 |
| 153 | 1,5 |
| 154 | 2 |
| 204 | 2 |
Typically available from stock. Other sizes on request.
Listed items show the typical range; we also quote custom specifications.
Send us your material list – one quote for the complete package (pipe, fittings, flanges, gaskets, bolting), sourced direct from manufacturers, no minimum order.
Request a quote