A barred tee (grate tee) is a tee or any fitting with a branch used in pipelines that is pigged and has a restriction bar welded internally preventing the pig from traveling down a branch connection. The bars are installed so they are flush with the inside diameter of the pipeline to keep the pig from hanging up when it passes through. The bars should be of a similar or identical material as the parent material.
Bars are placed on the internal side of a tee or really any branch connection big enough to sidetrack a pig while traveling down a pipeline. The size of the bars on the tee should be small enough so that they do not restrict the flow from the branch connection. However, they should be large enough to prevent breakage based on the flow rate through the branch connection of the tee.
Barred tees are pipe fittings with two outlets, one at 90 ° to the connection to the main line that has tiny holes. Barred tees can either be extruded or fabricated and are used to connect two pieces of pipe or fittings. Barred tees are used in pipelines that are pigged.
The bars in the branch should be installed flush with the inside diameter of main pipe. Commonly the bars are welded with the tees.
Barred Tee Grades:
Stainless Steel: ASTM, A403, WP304 / 304L / 304H / 316 / 316L / 317 / 317L / 321 / 310 / 347 / 904L
Carbon Steel: ASTM, A234, WPB / A420, WPL3 / A420, WPL6 / MSS-SP-75, WPHY 42 / 46 / 52 / 56 / 60 / 65 / 70
Alloy Steel: Astm A234 WP1 / WP5 / WP9 / WP11 / WP22 / WP91
Barred Tee drawings are available , or we could manufacturer according to your specific drawings .
| Nominal Pipe Size | Outside diameter
at bevel | Center-to-End |
| Run (C) | Outlet(M) |
| 1/2" | 21.3 | 25 | 25 |
| 3/4" | 26.7 | 29 | 29 |
| 1" | 33.4 | 38 | 38 |
| 1 1/4" | 42.2 | 48 | 48 |
| 1 1/2" | 48.3 | 57 | 57 |
| 2" | 60.3 | 64 | 64 |
| 2 1/2" | 73.0 | 76 | 76 |
| 3" | 88.9 | 86 | 86 |
| 3 1/2" | 101.6 | 95 | 95 |
| 4" | 114.3 | 105 | 105 |
| 5" | 141.3 | 124 | 124 |
| 6" | 168.3 | 143 | 143 |
| 8" | 219.1 | 178 | 178 |
| 10" | 273.0 | 216 | 216 |
| 12" | 323.8 | 254 | 254 |
| 14" | 355.6 | 279 | 279 |
| 16" | 406.4 | 305 | 305 |
| 18" | 457.0 | 343 | 343 |
| 20" | 508.0 | 381 | 381 |
| 22" | 559.0 | 419 | 419 |
| 24" | 610.0 | 432 | 432 |
The dimensions are in millimeters
Source : ASME B16.9 - 2007
Size: Dn100- DN1200
Specification: Sch20- Sch 160 .
Standard: ASME/ANSI B16.9.
Coating: Black painted, varnish oil.
Packing: Wooden case, pallet.
Pipe Barred Tee In stock :
A234 WPB Equal Barred Tee
A234 WPB Reducing Grate Tee
A234 WPB Lateral Tee
A234wp11 Butt Weld Barred Tee
A420 WPL6 Butt Weld Barred Tee
A860 Wphy60 Equal Tee with bars
A860 Wphy70 Reducing barred Tee
For more details , please contact us , more details and certificates for your reference .
