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ASTM and ASME specifications
Enquire for ASTM A270 sanitary tubing. Specify grade, size, surface finish and documentation for your process line.
Request a quoteTechnical reference
| Field | Order reference |
|---|---|
| Standard | ASTM A270/A270M and the project hygienic finish requirements |
| Product or route | Seamless or welded sanitary tube within the edition and grade scope |
| Critical dimensions and fit | Record inside and outside finish separately, with maximum Ra and method where required |
| Supply enquiry | Confirm sizes, lengths, route, documentation and lead time for your order |
Illustrative drawing sizes. The bore and mass are calculated from the nominal dimensions. Use the project tolerance and confirm the size and route in the quote.
| Tube OD (mm) | Wall (mm) | Nominal bore (mm) | Estimated kg/m at 8,000 kg/m³ |
|---|---|---|---|
| 25.4 | 1.65 | 22.10 | 0.98 |
| 38.1 | 1.65 | 34.80 | 1.51 |
| 50.8 | 1.65 | 47.50 | 2.04 |
Use the approved design code and service conditions. The applicable rating depends on material, temperature, minimum effective wall, joint details and the limits of the connected assembly. A schedule or a hydrostatic test result alone cannot establish an operating pressure.
Reference ASME process piping code B31.3
Selected grade designations to check against the ordered edition. Use that edition’s chemistry table for the complete element limits.
| Grade | UNS | Product context |
|---|---|---|
| TP304L | S30403 | Sanitary tubing with grade and finish stated separately |
| TP316L | S31603 | Sanitary tubing with grade and finish stated separately |
Reference ASTM A270/A270M scope
| Check | What to match |
|---|---|
| Grade and specification | TP or UNS on the quotation and material report |
| Heat analysis | Full limits and any stabilising or alloy additions under the ordered edition |
Reference ASTM steel standards
Check material and surface acceptance separately. State which surfaces require a measured Ra, how the report identifies them, and the required cleanliness and protective packing.
| Check | What to verify |
|---|---|
| Condition | Heat treatment or cold-work condition stated for the offered form |
| Acceptance | Project-specified dimensions and relevant test records |
Reference ASTM steel standards
Ask for the agreed bore finish evidence, seam checks and protective packing.
| When | What to check |
|---|---|
| Before ordering | Document the required test method, edition and any witness points |
| At delivery | Match the material report and heat or lot identification to the shipment |
Electropolishing specifies a process and should be recorded separately.
For the enquiry, record inside and outside finish separately, with maximum Ra and method where required.
ASTM A270/A270M and the project hygienic finish requirements · 25.4 × 1.65 mm. Add quantity, lengths, delivery city and the required reports.
Ordering guidance
A270 is a sanitary tubing specification. For a process line, provide the grade, actual outside diameter and wall thickness. State the required internal finish and any specific roughness, inspection or cleanliness criteria.
If the tube is part of a controlled process installation, attach the approved specification and state packaging and documentation requirements. Do not assume that grade alone establishes conformity with a sanitary tubing requirement.
Check pricing and availability →
Buyer’s guide
A270 covers sanitary stainless tubing within the standard’s scope. Specify the grade, edition, actual OD and wall, then provide the drawing or line specification. When the line must mate with clamp ferrules, make sure the tube and ferrule size and wall correspond to the selected connection system.
State whether each surface is as specified, mechanically polished or electropolished, and give the maximum Ra and reporting method where required. If the project specifies finish at the weld seam or a bore inspection method, include the requirement explicitly. Avoid relying on a generic finish name to define acceptance.
Confirm cleaning, end caps, bagging and labelling for the receiving process. If the line requires a project-specific hygienic standard or additional material or surface reports, list those requirements with the offer. Agree whether protection must be reinstated after cutting or inspection.
| Acceptance area | Detail to put on the purchase order |
|---|---|
| Inside surface | Finish process, maximum Ra and required report |
| Outside surface | Finish and whether visual matching is required |
| Seam or bore inspection | Required location, method and acceptance criteria |
| Clean delivery | End caps, bagging, marking and protection after cutting |
A line item for a hygienic skid should give the approved A270 grade, actual OD, wall, bore finish, documentation and capped or individually bagged lengths. Identify matching ferrules on a separate line if they are included in the order.
Choose the finish and acceptance criteria required by the project. State electropolishing explicitly where it is required.
Technical references ASTM steel standards directory · ASTM B912 electropolishing scope
Prepare your enquiry
| Item | What to send |
|---|---|
| Product details | A270 edition · grade · OD and wall · internal finish · roughness · packing |
| Delivery | Quantity with units, delivery city and required date if known |
| Acceptance | Required certificates and inspection scope; attach the drawing revision where applicable |
No. The product must meet the specified tubing standard and order requirements in addition to having the required grade.
Technical reference: ASTM steel standards catalogue
Project enquiries
Send your dimensions, quantities and delivery city. Include any inspection or material certificate requirements so they can be quoted against the same line items.
Request a quote → Call +91 99204 92715