Tee is a pipe fitting used at the branch of a pipe. For the use of seamless pipe manufacturing tee, the process is usually used hydraulic expansion and hot forming two kinds.

The hydraulic expansion of tee is a forming process in which the branch pipe is expanded by the axial compensation of the metal material. The process is to use a special hydraulic press to inject liquid into the tube billet with the same diameter as the tee, and then press the tube billet through the two horizontal side cylinders of the hydraulic press. The volume of the tube billet becomes smaller after being squeezed, and the liquid in the tube billet increases with the volume of the tube billet. The metal material flows along the inner cavity of the die under the double action of the liquid pressure in the side cylinder and the tube blank and expands the branch pipe.

Tee hot forming is to flatten the tube blank larger than tee diameter to the size of tee diameter, and open a hole in the part of stretching branch pipe; The tube blank is heated and put into the forming die, and the die of drawing branch pipe is put into the tube blank. Under the action of pressure, the billet is compressed in the radial direction. In the process of radial compression, the metal flows in the direction of the branch pipe and forms the branch pipe under the tension of the die. The whole process is formed by the radial compression of the billet and the stretching process of the branch pipe.

Product Parameters

Folding is classified according to pipe diameter

1. The same diameter tee: the main pipe and the branch pipe diameter of the same tee

2. Reducing tee: branch pipe diameter is less than the main pipe diameter tee

Folding is classified according to the butt type

1. Butt welded tee: It is a tee welded after docking with the connecting pipe.

2. Socket tee: It is a tee that is welded or fused after the connecting pipe is inserted into each end of the tee.

3. sleeve tee: is the end of the sleeve joint, insert the pipe fittings and then tighten the tee fittings.

4. threaded tee: threaded tee pipe fittings connected to the pipe fittings.

Folds are classified according to material

Can be divided into stainless steel tee, carbon steel tee, copper tee, pvc tee, ductile iron tee and so on.

Folds are classified according to branch pipe form

1. positive tee: is the branch pipe vertical head of the tee pipe fittings.

2. oblique tee: is the branch pipe and the main pipe has a certain Angle of tee pipe fittings.