Tee, also known as tee fittings or tee fittings, tee joints, etc. Mainly used to change the direction of the fluid, used in the main pipeline to branch pipe. Can be classified by pipe diameter. Generally made of carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon leaching, PVC and other materials.

Concept interpretation:

Tees are pipe fittings and pipe connectors. Also called pipe fittings tee or tee pipe fittings,

Stainless steel straight tee

Stainless steel straight tee

Tee joint, used in main pipe to branch pipe.

Tee is a kind of chemical pipe fitting with three ports, namely one inlet and two outlets. Or two inlets and one outlet, it has T-shape and Y-shape, equal diameter pipe orifice and different diameter pipe orifice, which is used for the collection of three identical or different pipelines. The main function of the tee is to change the direction of the fluid.

Classification:

Divided by pipe diameter size:

The nozzle ends of the straight tee are of the same size;

The main pipe of the reducing tee has the same size, while the branch pipe has a smaller size than the main pipe.

By process

1. Hydraulic bulging

The hydraulic bulging of the 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 hydraulic press to inject liquid into the tube blank with the same diameter as the tee, and squeeze the tube blank through the synchronous centering movement of the two horizontal side cylinders of the hydraulic press. After the tube blank is squeezed, the volume of the tube blank becomes smaller, and the pressure of the liquid in the tube blank increases as the volume of the tube blank becomes smaller. When the pressure required for the expansion of the tee branch pipe is reached, the metal material flows along the mold cavity under the dual action of the liquid pressure in the side cylinder and the tube blank and expands out of the branch pipe.

The hydraulic bulging process of the tee can be formed at one time, and the production efficiency is high. The wall thickness of the main pipe and shoulder of the tee is increased.

Due to the large tonnage of equipment required for the hydraulic bulging process of seamless tee, it is currently mainly used in the manufacture of standard wall thickness tee less than DN400. The suitable forming materials are low carbon steel, low alloy steel and stainless steel with relatively low cold hardening tendency, including some non-ferrous metal materials, such as copper, aluminum and titanium.

2. Hot press forming

Three-way hot pressing forming is to flatten the tube blank larger than the diameter of the three-way to the size of the diameter of the three-way,

Cold drawn tee

Cold drawn tee

Open a hole in the stretching branch pipe; The tube blank is heated, put into the forming die, and the die of the stretching branch pipe is installed in the tube blank; Under the action of pressure, the tube blank is radially compressed, and in the process of radial compression, the metal flows in the direction of the branch pipe and forms the branch pipe under the stretching of the die. The whole process is formed by the radial compression of the tube blank and the stretching process of the branch pipe. Unlike the hydraulic expansion tee, the metal of the hot-pressed tee branch pipe is compensated by the radial movement of the tube blank, so it is also called the radial compensation process.

Due to the use of heated pressing tee, material forming equipment required to reduce the tonnage. Hot-pressed tee has wide adaptability to materials and is suitable for low carbon steel, alloy steel and stainless steel materials; especially for tee with large diameter and thick pipe wall, this forming process is usually used.

Divided by material

Carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon leaching, pvc, etc.

Divided by production method

Top making, pressing, forging, casting, etc.