Sanitary Process Tubing
Welded sanitary round tube for hygienic process lines. Configure alloy, diameter, wall, finish, and length — every combination is a stocked or made-to-order SKU with full mill certification.
Greyed-out options aren't stocked as catalog builds. Contact our engineers to quote a custom configuration.
About This Product
CSI sanitary process tubing is welded and drawn to ASME BPE tolerances for food, dairy, beverage, and pharmaceutical fluid handling. Each tube ships with a mill test report tying it to its heat number for full traceability.
The configurator covers our complete round-tube program: four alloys from workhorse 304 through chloride-resistant AL-6XN, nine standard outside diameters, four wall thicknesses, three interior finishes, and three length formats including cut-to-length.
Electropolished options meet 15Ra interior finish for high-purity and WFI service; 3-A and ASME BPE SF1 surface designations are available across the range.
Features
- Welded construction to ASME BPE / ASTM A270 tolerances
- Four alloys: 304/304L, 316/316L, AL-6XN, 2205 Duplex
- Nine outside diameters from 0.5" through 6"
- Mill, electropolished (15Ra), and 3-A interior finishes
- Full mill test report + heat-number traceability on every run
- 20 ft mill lengths, precut 80", or cut-to-length
Compare Options
The configurations we keep on the shelf, ready to ship. Need a different size, wall, or finish? Build any of 1,296 specs with the configurator above — made to order.
| Item # | Action | ||||||
|---|---|---|---|---|---|---|---|
| In stock: 258T304-0.5X.065-W-PL-240 | 304 / 304L Stainless | 0.5" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $89.76 | |
| In stock: 347T304-0.5X.065-W-PL-80 | 304 / 304L Stainless | 0.5" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $29.92 | |
| In stock: 220T304-0.75X.065-W-PL-240 | 304 / 304L Stainless | 0.75" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $110.16 | |
| In stock: 298T304-0.75X.065-W-PL-80 | 304 / 304L Stainless | 0.75" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $36.72 | |
| In stock: 184T304-1.0X.065-W-PL-240 | 304 / 304L Stainless | 1" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $139.94 | |
| In stock: 249T304-1.0X.065-W-PL-80 | 304 / 304L Stainless | 1" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $46.65 | |
| In stock: 71T304-1.5X.065-W-PL-240 | 304 / 304L Stainless | 1.5" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $187.68 | |
| In stock: 97T304-1.5X.065-W-PL-80 | 304 / 304L Stainless | 1.5" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $62.56 | |
| Low stock: 37T304-2.0X.065-W-PL-240 | 304 / 304L Stainless | 2" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $252.96 | |
| In stock: 51T304-2.0X.065-W-PL-80 | 304 / 304L Stainless | 2" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $84.32 | |
| In stock: 180T316-0.5X.065-W-PL-240 | 316 / 316L Stainless | 0.5" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $112.20 | |
| In stock: 243T316-0.5X.065-W-PL-80 | 316 / 316L Stainless | 0.5" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $37.40 | |
| In stock: 154T316-0.75X.065-W-PL-240 | 316 / 316L Stainless | 0.75" | 0.065" | Mill · 20Ra ID / 32Ra OD | 20 ft mill length | $137.70 | |
| In stock: 209T316-0.75X.065-W-PL-80 | 316 / 316L Stainless | 0.75" | 0.065" | Mill · 20Ra ID / 32Ra OD | Precut 80" | $45.90 |
- In stock: 258304 / 304L Stainless·0.5"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$89.76
- In stock: 347304 / 304L Stainless·0.5"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$29.92
- In stock: 220304 / 304L Stainless·0.75"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$110.16
- In stock: 298304 / 304L Stainless·0.75"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$36.72
- In stock: 184304 / 304L Stainless·1"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$139.94
- In stock: 249304 / 304L Stainless·1"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$46.65
- In stock: 71304 / 304L Stainless·1.5"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$187.68
- In stock: 97304 / 304L Stainless·1.5"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$62.56
- Low stock: 37304 / 304L Stainless·2"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$252.96
- In stock: 51304 / 304L Stainless·2"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$84.32
- In stock: 180316 / 316L Stainless·0.5"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$112.20
- In stock: 243316 / 316L Stainless·0.5"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$37.40
- In stock: 154316 / 316L Stainless·0.75"·0.065"·Mill · 20Ra ID / 32Ra OD·20 ft mill length$137.70
- In stock: 209316 / 316L Stainless·0.75"·0.065"·Mill · 20Ra ID / 32Ra OD·Precut 80"$45.90
Specifications
Product Attributes
- Product Type
- Tube
- Product Subtype
- Round Tube
- Construction
- Welded
- Specification / Standard
- ASME BPE SF1 · ASTM A270 · SA249
- ID surface designations
- SF1, SF4 (EP)
- Traceability
- Mill test report + heat number
Technical Data
- Standards
- ASME BPE, ASTM A270, A269, SA249, S269, A270-S2
- Weld process
- Automated GTAW, no filler
- Max working temp
- 800°F (continuous, 304/316)
- OD tolerance
- ±0.005" (BPE)
- Standard interior finish
- 20Ra ID / 32Ra OD (mill)
- EP interior finish
- ≤15Ra ID
Dimensions & CAD
Tube OD / wall / weight reference
| 0.5 | 0.065 | 0.370 | 0.30 | 20Ra |
| 0.75 | 0.065 | 0.620 | 0.47 | 20Ra |
| 1.0 | 0.065 | 0.870 | 0.65 | 20Ra |
| 1.5 | 0.065 | 1.370 | 0.99 | 20Ra |
| 2.0 | 0.065 | 1.870 | 1.33 | 20Ra |
| 2.5 | 0.065 | 2.370 | 1.67 | 20Ra |
| 3.0 | 0.065 | 2.870 | 2.01 | 20Ra |
| 4.0 | 0.083 | 3.834 | 3.42 | 20Ra |
| 6.0 | 0.109 | 5.782 | 6.79 | 20Ra |
Compatible Spare Parts
Replacement components and service kits for this product.
| Product | Item Number | Price | Add to cart |
|---|---|---|---|
| TC-FERRULE-150-316 | $7.10 | |
| EPDM-GASKET-150 | $2.95 | |
| CLAMP-SS-150 | $6.40 |
Resources & Downloads
8 documents available — spec sheets, drawings, installation guides, certifications, and more.
Articles on Tubing
304 vs 316 vs AL-6XN: Choosing Tube Alloy for Chloride Service
When 316L pits and when to step up to a super-alloy — a field guide to chloride thresholds in sanitary process lines.
Electropolished vs Mechanically-Polished Tube ID for WFI
What 15Ra actually buys you in a water-for-injection loop, and where mechanical polish is enough.
Browse the full CSI engineering blog
Field notes, application audits, and design walkthroughs from our engineers.
All articlesFAQ
Common questions our process engineers hear about this product.
304/304L is the general-purpose workhorse. 316/316L adds molybdenum for better corrosion resistance in mild chloride and acidic service. AL-6XN is a super-austenitic alloy for aggressive chloride environments where 316 would pit. 2205 Duplex offers high strength with strong chloride stress-corrosion resistance.
Subtract twice the wall thickness from the OD. A 1" OD tube with a 0.065" wall has an ID of 1.00 − 0.130 = 0.870". The dimensional reference table lists ID for every standard OD/wall pairing.
Electropolishing brings the interior surface to ≤15Ra and removes the surface layer to improve cleanability and corrosion resistance. It's standard for water-for-injection (WFI), high-purity, and many biopharmaceutical applications. Mill finish (20Ra) is sufficient for most food, dairy, and beverage service.
Yes. Every tube ships with a mill test report (MTR) tied to its heat number, documenting chemical composition and mechanical properties for full traceability.
Standard 20 ft mill lengths, precut 80" lengths for common installs, and cut-to-length service where we cut to your exact dimension before shipping.
Talk to a Process Engineer.
Pick a size, specify a finish, or scope out a full skid. CSI engineers spend careers in the plants you're selling into — every line in your spec is a question we've answered before.