Classified by diameter

1. Tee with the same diameter: the tee with the same diameter as the main pipe and branch pipe

2. Tee with different diameters: Tees with branch pipe diameter smaller than main pipe diameter

Classified by connection

1. Butt welding tee: It is a tee pipe fitting welded after being connected with the connecting pipe fitting.

2. Socket-type tee: It is a tee pipe fitting welded after inserting the connecting pipe into each end of the tee.

3. Card sleeve type tee: It is a tee pipe fitting where each end is a card sleeve joint, and the pipe fitting is inserted and then fastened.

4. Threaded tee: tee pipe fittings that connect pipe fittings in a threaded manner.

According to the material, it can be divided into stainless steel tee, carbon steel tee, copper tee, PVC tee, etc.

Classified by branch form

1. Positive tee: It is the tee fitting with the branch pipe perpendicular to the main pipe.

2. Oblique tee: It is a tee fitting with a certain angle between the branch pipe and the main pipe.