Hygienic tubing for dairy, food, beverage, pharma and cosmetics process lines. Internal surface polished to 240 grit (Ra ≤ 0.5 µm) so product does not cling and CIP cleaning is effective. Supplied to OD/wall dimensions rather than NB.
| Grades available | 304L / 316L |
|---|---|
| Sizes | 1/2" to 6" OD |
| Thickness | 1.0 – 2.0 mm |
| Finish | 240 grit internal, 320 grit external |
| Minimum order | 50 kg |
| Standard | ASTM A270 / DIN 11850 |
| Roughness | Ra ≤ 0.5 µm internal |
| Ends | Plain, tri-clover, DIN union |
| Certification | MTC + roughness report |
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Get quote on WhatsAppEnter your size and we work out the theoretical weight using the density of the grade you pick.
Theoretical weight only. Mill rolling tolerance normally makes the delivered weight differ by 2–5%; we invoice on actual weighbridge weight.
What the metal is actually made of, as specified by the standard.
Low-carbon 304. Chosen when sections are welded and cannot be annealed afterwards — less risk of weld decay.
Strip shows the mid-point of each specified range, with iron as balance. The table below is the full specification.
| Element | Name | Specified % by weight | |
|---|---|---|---|
| C | Carbon | ≤ 0.030 | |
| Mn | Manganese | ≤ 2.00 | |
| Si | Silicon | ≤ 0.750 | |
| P | Phosphorus | ≤ 0.045 | |
| S | Sulphur | ≤ 0.030 | |
| Cr | Chromium | 17.50 – 19.50 | |
| Ni | Nickel | 8.00 – 12.00 | |
| N | Nitrogen | ≤ 0.100 | |
| Fe | Iron | Balance | ≈ 70.0% |
Limits as per ASTM A240 / A276. Always confirm against the mill test certificate for your consignment.
Cut-to-length, slitting and custom sections are done in-house. Send the drawing or the dimensions and we will confirm price and lead time.