SS 304 TeeASTM A403 · ASME B16.9 · Manufacturer, stockist & exporter, India
AISI 304 · UNS S30400
An SS 304 tee is a fitting with a 90° branch that splits or combines flow, made from SS 304 to ASTM A403 WP304 (buttweld) · ASTM A182 F304 (forged). Equal tees have the same size branch as the run; reducing tees have a smaller branch. Barred tees add internal bars so pipeline pigs pass the branch.
- ASTM A403
- ASME B16.9
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 304 Tee?
- What it is
- A fitting with a 90° branch that splits or combines flow
- Material
- ASTM A403 WP304 (buttweld) · ASTM A182 F304 (forged)
- Dimensions
- ASME B16.9 · B16.11
- Grade
- SS 304 · UNS S30400
- Best at
- General corrosion resistance, food, water and architectural work
SS 304 Tee Specification
| Product | SS 304 Tee |
|---|---|
| Material standard | ASTM A403 WP304 (buttweld) · ASTM A182 F304 (forged) |
| Dimensional standard | ASME B16.9 · B16.11 |
| Sizes | Buttweld ½" – 48" · forged ⅛" – 4" |
| Wall / class | Schedule to match pipe · Class 3000 / 6000 (forged) |
| Ends | Bevelled to ASME B16.25 |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Tee
Equal tees have the same size branch as the run; reducing tees have a smaller branch. Barred tees add internal bars so pipeline pigs pass the branch.
- Equal and reducing
- Barred tees for piggable lines
- Buttweld, socket weld or threaded
More on choosing: Tee guide.
SS 304 Tee: Why 304 for tees
Equal tees have the same size branch as the run; reducing tees have a smaller branch. Barred tees add internal bars so pipeline pigs pass the branch. In SS 304, 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 fittings keep the line clean and corrosion-free. SS 304 is picked for general corrosion resistance, food, water and architectural work. |
|---|---|
| Typical service | Food & dairy — Tanks, piping and equipment that must be cleaned daily. |
| Welding to carbon steel | ER309L (or E309L electrode) is the usual filler when joining it to carbon steel |
| Matching filler | ER308 / ER308L (AWS A5.9) |
SS 304 Tee 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 |
| Nitrogen | As specified |
| Phosphorus | As specified |
| Sulphur | 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 S30400.
SS 304 Tee 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 S30400 — Annealed plate & sheet.
Full chemistry, properties and equivalents are on the SS 304 grade page.
Other SS 304 pipe fittings
SS 304 Tees for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSS 304 Tee dimensions — ASME B16.9
Values in mm, the same for every material; the wall thickness matches the pipe schedule.
| NPS | OD | Tee centre-to-end C |
|---|---|---|
| ½" | 21.3 | 25 |
| ¾" | 26.7 | 29 |
| 1" | 33.4 | 38 |
| 1½" | 48.3 | 57 |
| 2" | 60.3 | 64 |
| 3" | 88.9 | 86 |
| 4" | 114.3 | 105 |
| 6" | 168.3 | 143 |
| 8" | 219.1 | 178 |
| 10" | 273.1 | 216 |
| 12" | 323.9 | 254 |
| 16" | 406.4 | 305 |
| 20" | 508.0 | 381 |
| 24" | 610.0 | 432 |
Full chart: ASME B16.9 fitting dimensions.
SS 304 Tee — questions buyers ask
What is a barred tee?
A tee with bars welded across the branch opening so a pipeline pig cannot enter the branch.
Can SS 304 tees be welded to carbon steel?
Yes — ER309L (or E309L electrode) is the usual filler when joining it to carbon steel.
Which standard covers SS 304 tees?
The material is ASTM A403 WP304 (buttweld) · ASTM A182 F304 (forged); dimensions follow ASME B16.9 · B16.11. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 304 tee?
The alloy price, the size and schedule or class, 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 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026