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DIN 11850 · SMS · ASME BPE · EP SF1–SF6

Sanitary & Hygienic Tube — EP-Ready

Bright-annealed and electropolished stainless tube for food, dairy, beverage, pharmaceutical and biotech process lines. DIN 11850, SMS 3008, BS 4825 and ASME BPE — 304/316L, with surface finishes from mill to electropolished (EP) SF4–SF6.

Polished sanitary hygienic stainless steel tube
/ Overview

Crevice-free tube for hygienic process

Hygienic process lines demand smooth, cleanable, crevice-free tube. AAM Steel supplies sanitary OD tube in 304/304L and 316/316L to DIN 11850, SMS 3008, BS 4825, ISO 1127/2037 and ASME BPE, with matching tri-clamp, DIN 11851 and aseptic DIN 11864 fittings.

Surface finish is specified by Ra: mechanically polished (SF1–SF3) or electropolished (EP) SF4–SF6 for pharmaceutical, WFI and high-purity service — orbital-weld-ready, passivated (ASTM A967/A380), with Ra readings, ferrite and sulphur reports.

/ Grades & standards

Standards & finishes

DIN 11850 / SMS 3008

Dairy/food metric OD tube — the GCC standard.

BS 4825 / ISO 1127

Inch & metric hygienic OD tube.

ASME BPE

US bioprocess standard — pharma/biotech.

EP SF4–SF6

Electropolished, orbital-weld-ready high-purity.

Welded & seamless (OD tube)304 / 304L / 316LBright-annealedMechanically polished SF1–SF3Electropolished SF4–SF6Passivated + Ra reportsTri-clamp / DIN 11851 / 11864 fittings
/ Dimensions & weight

Hygienic OD tube — size & weight

OD (mm)StandardWall (mm)kg/m

Metric hygienic tube (DIN 11850) reference. Inch OD (BS 4825/ASME BPE) and EP finishes on request.

/ FAQ

Common questions

What is the difference between polished and electropolished (EP) tube?
Mechanically polished tube is ground to a grit finish (SF1–SF3); electropolished (EP) tube is then electrochemically smoothed (SF4–SF6) to a lower Ra with an enriched chromium-oxide passive layer — required for pharma and high-purity WFI service.
What standards cover sanitary tube?
DIN 11850, SMS 3008, BS 4825, ISO 1127/2037, ASME BPE and 3-A. Fittings follow DIN 11851 (union), DIN 11864 (aseptic) and tri-clamp (BS 4825/ASME BPE).
Is the tube orbital-weld-ready?
Yes — hygienic and EP tube is supplied with tight OD/wall tolerances, controlled ID and weld-end preparation for automatic orbital welding, passivated and certified.
Where can I buy sanitary tube in the GCC?
AAM Steel supplies sanitary and EP tube and fittings across Qatar, the UAE and Saudi Arabia for food, dairy, beverage and pharma projects. Send your standard, size and finish for a quote.
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Hygienic tube RFQ

Get a sanitary / hygienic tube quote

Give us the standard (DIN 11850 / ASME BPE), grade, size and finish (polished or EP SF-rating) — we'll quote with certs.

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