SS 310 / 310S Rectangular TubeASTM A554 · Manufacturer, trader & exporter, India
AISI 310S · UNS S31008
An SS 310 / 310S rectangular tube is rectangular hollow section, made from SS 310 / 310S to ASTM A554 (ornamental) · A312 / A790 for pressure. Rectangular tube is used for frames, supports and architectural work.
- ASTM A554
- ASTM A554 / EN 10219
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 310 / 310S Rectangular Tube?
- What it is
- Rectangular hollow section
- Material
- ASTM A554 (ornamental) · A312 / A790 for pressure
- Dimensions
- ASTM A554 / EN 10219
- Grade
- SS 310 / 310S · UNS S31008
- Best at
- Furnaces, burners and heat treatment at high temperature
SS 310 / 310S Rectangular Tube Specification
| Product | SS 310 / 310S Rectangular Tube |
|---|---|
| Material standard | ASTM A554 (ornamental) · A312 / A790 for pressure |
| Dimensional standard | ASTM A554 / EN 10219 |
| Sizes | OD × wall to order |
| Length | Random, double random or cut lengths |
| Testing | PMI (as specified in the PO) · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 or 3.2 on request / as specified in the PO |
When to Choose a Rectangular Tube
Rectangular tube is used for frames, supports and architectural work.
- Rectangular hollow section
- Polished or mill finish
- Cut lengths
More on choosing: Rectangular tube guide.
SS 310 / 310S Rectangular Tube: Why 310S for rectangular tubes
Rectangular tube is used for frames, supports and architectural work. In SS 310 / 310S, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Stainless tubulars are the default for corrosive and hygienic service. SS 310 / 310S is picked for furnaces, burners and heat treatment at high temperature. |
|---|---|
| Typical service | Furnace parts — Muffles, retorts, radiant tubes and conveyor belts. |
| Welding to carbon steel | ER309L (or E309L electrode) is the usual filler when joining it to carbon steel |
| Matching filler | ER310 (AWS A5.9) |
SS 310 / 310S Rectangular Tube Chemical Composition
Under technical review for TDS.
| Element | Current requirement |
|---|---|
| Chromium | As specified |
| Nickel | As specified |
| Carbon | As specified |
| Manganese | As specified |
| Silicon | As specified |
| Phosphorus | As specified |
| Sulphur | As specified |
| Iron | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification to be verified: ASTM A240 for UNS S31008.
SS 310 / 310S Rectangular Tube Mechanical Properties
Under technical review for TDS.
| Property | Current requirement |
|---|---|
| Tensile strength | As specified |
| Yield strength 0.2% | As specified |
| Elongation | As specified |
| Hardness | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification and condition to be verified: ASTM A240 for UNS S31008 — Annealed plate & sheet.
Full chemistry, properties and equivalents are on the SS 310 / 310S grade page.
Standards on this page
Other SS 310 / 310S pipes & tubes
SS 310 / 310S Rectangular Tube — questions buyers ask
Are rectangular tubes structural?
In carbon steel they follow EN 10219 / 10210 for structures; stainless versions are mostly ornamental to ASTM A554.
Can SS 310 / 310S rectangular tubes be welded to carbon steel?
Yes — ER309L (or E309L electrode) is the usual filler when joining it to carbon steel.
Which standard covers SS 310 / 310S rectangular tubes?
The material is ASTM A554 (ornamental) · A312 / A790 for pressure; dimensions follow ASTM A554 / EN 10219. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 310 / 310S rectangular tube?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 or 3.2 certificates available on request / as specified in the PO; dimensional reports as required. PMI can be arranged depending on product and requirements, as specified in the PO.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026