Equal and reducing branch fittings with identified run and branch ends
We supply carbon steel butt weld tees for branch connections in fabricated piping. Equal tees and reducing tees are ordered by their run and branch sizes, with material, wall and construction retained on each item. The branch takeout and available weld access are matched to the spool drawing.
| Equal tee | Same nominal size at all three connections |
|---|---|
| Reducing tee | Run size and smaller branch size stated together |
| Material | Specified carbon steel grade and delivery condition |
| Construction | Formed/seamless or welded route as identified |
| Connection walls | Required wall at both run ends and the branch |
| End preparation | Approved weld bevel, root face and any bore transition |
These equal-tee references support branch and run layout checks. A reducing tee uses its own run/branch dimensional row.
| Equal tee NPS (in.) | End OD (mm) | Run center-to-end C (mm) | Branch center-to-end M (mm) |
|---|---|---|---|
| 2 | 60.3 | 64 | 64 |
| 3 | 88.9 | 86 | 86 |
| 4 | 114.3 | 105 | 105 |
| 6 | 168.3 | 143 | 143 |
| 8 | 219.1 | 178 | 178 |
| 10 | 273.0 | 216 | 216 |
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ASME B16.9 equal-tee layout values, cross-checked against the Weldbend metric catalog page 49. C locates either run end from the branch centerline; M locates the branch end from the run centerline. Wall schedule and reducing-branch dimensions are separate selections.
ASTM A234 WPB orders identify the material grade; ASME B16.9 addresses the wrought fitting. The purchase description retains both.
A welded tee and a formed seamless tee have different manufacturing histories. Required examination and records follow that route and the adopted specification, including any additional project requirements.
A site-fabricated branch or welded stub is a different detail from a specified factory-made tee. Its acceptance needs the relevant piping-design and fabrication route.
Center-to-end measurements use the intersecting centerlines. The complete run length is twice C for the symmetric equal tee in the table. Branch M is measured separately.
A smaller branch changes the branch connection and can change the takeout. The selected reducing-tee row or drawing fixes those dimensions.
The main line and branch can have different wall designations. Each mating connection retains its required end thickness and weld transition, including the branch where a bore mismatch can be harder to see.
The tee layout leaves the required room for welding and examination near the branch. Adjacent elbows, reducers and supports are positioned from the approved spool arrangement.
An equal tee provides a same-size branch connection. The fitting schedule keeps the material and wall tied to the correct header and branch, even where several similar tees appear on the takeoff.
A reducing tee brings a smaller line into the larger run without adding a separate reducer at that branch position. The branch size and takeout remain explicit in the spool list.
The selected fitting dimensions locate the branch relative to the run ends. Checks include the end-face relationship and the geometry needed for the ordered spool.
Both run ends and the branch are checked against their specified connection sizes and walls. Reducing branches are measured at the branch end.
Surface and required examination checks cover the branch junction as well as the ends. Machined bevels and material identity stay visible until protective packing.
Our quote names the equal or reducing type, run and branch size, grade, construction and end walls. Piece counts stay tied to that complete designation.
Separators keep projecting branches and beveled edges from hitting neighboring fittings. Different branch sizes or walls retain separate item references, even when their run sizes match.
Required material and inspection records follow the supplied tee lot. Special marking, coating and packing are identified with the corresponding shipment lines.
No. A reducing tee is a three-ended fitting inserted into the main run. A branch outlet attaches to a prepared opening in a pipe and has its own design and end arrangement; the two are not substituted by branch size alone.
A size combination outside the adopted catalog needs its own fitting drawing and acceptance route. It is not created by changing only the branch dimension on a standard order line.
The loose equal tee has the stated geometry, but its installed branch direction follows the spool drawing. The piece count does not decide whether the branch points up, down or sideways in the completed pipework.
Lifting uses the approved handling arrangement for the assembly. A piping branch is not assumed to be a rated lifting attachment merely because it provides a convenient opening or projection.
No. The branch takeout and overall connection locations can differ. The replacement arrangement is checked against the isometric and available space before it changes the material list.
A hole or tapping changes the fitting. Its position, size, reinforcement and machining follow the approved design and fabrication scope; loose-tee supply does not include an unspecified instrument connection.
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We wrote these for buyers specifying and receiving exactly this kind of package.
Send the tee types, run and branch sizes, required end walls, grade, construction and piece quantities. Add the branch dimensional drawing where the takeout is project-specific.