Stainless steel pipes & tubes
We supply seamless and welded stainless and acid-resistant pipes and tubes, from small precision tubes to large welded pipe, in grades such as 1.4301 (304), 1.4404 (316L) and 1.4571 (316Ti) to EN 10216-5, EN 10217-7 and ASTM A312. We deliver from stock or mill production with EN 10204 3.1 certificates and no minimum order. Typical uses include chemical and process lines, water and wastewater treatment, food and beverage production and machine building.
- Sourced direct from manufacturers
- EN 10204 3.1 certificates
- From stock or mill production
- Cut-to-length on request
Specification
- Outside diameter
- 3,18 – 1219 mm
- Wall thickness
- 0,5 – 59,51 mm
Material and standards
- Standards
- EN 10216-5 · EN 10217-7 · ASTM A312 · ASTM A358 · ASTM A269
- Material grades
- 1.4301 · 1.4307 · 1.4404 · 1.4571 · 1.4541 · TP304/L · TP316/L · TP321
Certification
- Certification
- Inspection certificate to EN 10204 3.1
Overview
- Grades:
- general: 1.4301 (304), 1.4307 (304L); - acid-resistant: 1.4404 (316L), 1.4571 (316Ti); - stabilised: 1.4541 (321), 1.4550 (347); - heat-resistant: 1.4845 (310S), plus further austenitic grades.
- Standards: EN 10216-5, EN 10217-7, ASTM A312, A358, A213 and A269.
- Sizes: from small precision tubes to large welded pipe.
- Certificates: EN 10204 3.1.
- From stock or mill production, with no minimum order.
When to choose stainless pipe
Stainless pipe is the right choice where carbon steel would corrode, or where the purity of the medium matters:
- chemical and process lines;
- water and wastewater treatment;
- food and beverage production;
- energy utility systems;
- machine building.
The passive layer on the surface of stainless steel protects the material. As a result, the line stays resistant for the long term without coating.
Which grade for which job?
- 1.4301 / 1.4307 (304 / 304L): sufficient for most general duties: potable water, compressed air, cooling water, mildly corrosive media and building services.
- 1.4404 (316L): molybdenum-alloyed. It resists chlorides, acids and more aggressive atmospheres, and is the standard material in chemical and food processing.
- 1.4571 (316Ti): titanium-stabilised molybdenum grade, specified where intergranular corrosion after welding at elevated temperature is a concern.
- 1.4541 / 1.4550 (321 / 347): stabilised grades for higher service temperatures.
- 1.4845 (310S): heat-resistant austenitic steel for furnaces and high-temperature air and gas lines.
The "L" (low carbon) grades resist intergranular corrosion better after welding, so they are often specified for welded lines. Many tubes are dual-certified (e.g. 304/304L, 316/316L) and meet both specifications.
Product forms and finishes
- seamless: hot-finished or cold-drawn;
- welded: longitudinally welded, and spiral or submerged-arc welded for large diameters;
- finishes: pickled and passivated, bright annealed, ground, or mechanically polished inside and outside;
- bends and cut-to-length service.
What to include in your RFQ:
- grade and standard (e.g. "1.4404, EN 10216-5");
- OD × wall (or NPS and schedule);
- seamless or welded;
- finish;
- test category (TC1 / TC2);
- certificate (3.1);
- lengths;
- the matching fittings and flanges.
Frequently asked questions
What is the difference between 1.4404 and 1.4571?
Both are molybdenum acid-resistant steels. 1.4404 is low-carbon, while 1.4571 is titanium-stabilised. The choice depends on the welding procedure and the design specification.
Do you supply ASTM pipe too?
Yes. We supply ASTM A312 (TP304/304L, TP316/316L, TP321, TP347 etc.), as well as A358, A213 and A269.
Is there a minimum order?
No. We quote small lots and project quantities alike.
Size table
| DN | NPS | OD (mm) | Wall (mm) |
|---|---|---|---|
| – | – | 3,18–16 | 0,5–4 |
| DN10 | ⅜" | 17,2 | 1–3,2 |
| DN15 | ½" | 21,3 | 1–7,47 |
| DN20 | ¾" | 26,9 | 1–7,82 |
| DN25 | 1" | 33,7 | 1–9,09 |
| DN32 | 1¼" | 42,4 | 1,2–9,7 |
| DN40 | 1½" | 48,3 | 1,2–10,16 |
| DN50 | 2" | 60,3 | 1,2–11,07 |
| DN65 | 2½" | 76,1 | 1,5–6,3 |
| DN80 | 3" | 88,9 | 1,5–15,24 |
| DN100 | 4" | 114,3 | 1,6–17,12 |
| DN125 | 5" | 139,7 | 1,6–19,05 |
| DN150 | 6" | 168,3 | 2–21,95 |
| DN200 | 8" | 219,1 | 2–23,01 |
| DN250 | 10" | 273 | 2–28,58 |
| DN300 | 12" | 323,9 | 2–33,32 |
| DN350 | 14" | 355,6 | 2–35,71 |
| DN400 | 16" | 406,4 | 2,5–40,46 |
| DN450 | 18" | 457 | 3–45,24 |
| DN500 | 20" | 508 | 3–49,99 |
| DN600 | 24" | 610 | 3–59,51 |
| DN700 | 28" | 711 | 4–15,88 |
| DN800 | 32" | 813 | 4–17,48 |
| DN900 | 36" | 914 | 4–19,05 |
| DN1000 | 40" | 1016 | 4–19,1 |
| DN1200 | 48" | 1219 | 4–11 |
78 further non-DN outside diameters (18–965,2 mm), e.g. inch and precision sizes.
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