Spec Sheet
Industrial Standard BS 4825
BS 4825 Stainless Steel Sanitary Tubes
BS 4825 is the British Standard for hygienic tubing, widely adopted across the UK and Commonwealth countries for applications demanding superior hygiene and surface quality. Our BS 4825 tubes are manufactured with dimensional precision and internally polished to meet the stringent requirements of food processing, dairy, brewing, and pharmaceutical applications.
Compliance & Specs
Hardware Properties
- Manufactured to BS 4825-1:1991 specifications
- OWT (Outside Welded Tube) with smooth internal weld bead
- Suited for food, dairy, brewing, and pharma industries
- Compatible with RJT and IDF connections
- Surface finish options from mill to electropolished
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 | — |
Catalog Continuation
Related Hardware
Product Inquiry
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