Tee symbol
Also called Equal tee, Reducing tee
A tee splits or joins the line with a branch at 90 degrees. A reducing tee has a smaller branch.
What the tee symbol means
A tee splits or joins the line with a branch at 90 degrees. A reducing tee has a smaller branch.
How it is drawn
A branch line from the run, with a weld dot at each of the three ends.
Isometric SVGWhere you see it
Branch connections to other lines, vents, drains and instruments.
What is written next to it
On the isometric, the tee usually carries an item number pointing to the bill of materials, with the run and branch sizes.
What gets checked on site
For a tee, the site checks usually cover the three welds and the branch orientation. Each check is recorded against the line and the joint, so the line can go into its test pack and be handed over with its evidence. See the ITR guide.
Related symbols
Frequently asked questions
What does the tee symbol look like?
A branch line from the run, with a weld dot at each of the three ends.
Where is a tee used?
Branch connections to other lines, vents, drains and instruments.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016