ISO / SMS Stainless Steel Sanitary Tubes

ISO/SMS standard tubes are the benchmark for hygienic tubing in the European dairy and food processing markets. Developed from the Swedish Milk Standard, these tubes feature precise dimensional tolerances and smooth surface finishes that facilitate thorough cleaning and prevent product buildup. Widely used across Scandinavia, Europe, and globally.

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ISO / SMS Stainless Steel Sanitary Tubes

Compliance & Specs

Hardware Properties

Compliant with ISO 2037 and Swedish Milk Standards (SMS)
Precision OD tolerances for reliable clamp connections
Interior Ra values optimized for dairy and food applications
Available in 304/304L and 316/316L grades
Compatible with ISO/SMS tri-clamp fittings

Dimensional

Range Variance

OD Range

6.00 mm to 219.10 mm

Wall Thickness

0.50 mm to 3.00 mm

Length Availability

Up to 6 meters (20 ft)

Metallurgical Data

Chemical Composition

Batch-verified elemental analysis in accordance with international specification codes.

Grade	C (%)	Mn (%)	P (%)	S (%)	Si (%)	Cr (%)	Ni (%)	Mo (%)
304	0.08	2.0	0.045	0.030	0.75	18.00–20.00	8.00–10.50	—
304L	0.03	2.0	0.045	0.030	0.75	18.00–20.00	8.00–12.00	—
316	0.08	2.0	0.045	0.030	0.75	16.00–18.00	10.00–14.00	2.00–3.00
316L	0.03	2.0	0.045	0.030	0.75	16.00–18.00	10.00–14.00	2.00–3.00
1.4404*	0.03	2.0	0.045	0.015	1.0	16.50–18.50	10.00–13.00	2.00–2.50
1.4435*	0.03	2.0	0.045	0.015	1.0	17.00–19.00	12.50–15.00	2.50–3.00

Verification Data

Mechanical Properties

Stress-testing results confirming absolute structural integrity of the alloy selection.

Grade	UNS Code	ASTM Spec	Yield (MPa)	Tensile (MPa)	Elongation (%)	Hardness
304	S30400	ASTM A270 / A269	≥205	≥515	≥35	≤90 HRB
304L	S30403	ASTM A270 / A269	≥170	≥485	≥35	≤90 HRB
316	S31600	ASTM A270 / A269	≥205	≥515	≥35	≤90 HRB
316L	S31603	ASTM A270 / A269	≥170	≥485	≥35	≤90 HRB
1.4404	—	EN 10357-2	≥200	≥500-700	≥30	—
1.4435	—	EN 10357-2	≥200	≥500-700	≥30	—