Tee is also known as tee or tee pipe fittings, tee joints, etc. Mainly used to change the direction of the fluid, used in the main pipe to branch pipe. Can be classified by pipe size. Generally made of carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon, pvc and other materials.
Definition of concept:
Tee is pipe fitting and pipe connecting piece. Also known as a tee or a tee,
Stainless steel equal diameter tee
Stainless steel equal diameter tee
Tee joint, used in the main pipe to branch pipe.
A tee has three openings, namely one inlet and two outlet; Or two inlet, one outlet of a chemical pipe fittings, T shape and Y shape, with equal diameter pipe mouth, also have reducing diameter pipe mouth, used for three same or different pipe collection. The main function of the tee is to change the direction of the fluid.
Categories:
Divided by pipe diameter:
The nozzle ends of equal diameter tees are the same size;
The main pipe size of the reducing tee is the same, and the nozzle size of the branch pipe is smaller than that of the main pipe.
By process
1. Hydraulic expansion
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 hydraulic press, the tube blank with the same diameter as the tee is injected with liquid, through the two horizontal side cylinders of the hydraulic press synchronous movement to extrude the tube blank, the volume of the tube blank becomes smaller after extrusion, and the liquid in the tube blank increases with the volume of the tube blank. When the pressure required for the expansion of the tee branch pipe is reached, 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.
The hydraulic expansion process of tee can be formed at one time, and the production efficiency is high. The wall thickness of the head and shoulder of the tee has increased.
Due to the large equipment tonnage required for the hydraulic expansion process of seamless tee, it is mainly used for the manufacture of standard tee with wall thickness less than DN400 in China. Its suitable forming materials are low carbon steel, low alloy steel, stainless steel, including some non-ferrous metal materials, such as copper, aluminum, titanium and so on.
2. Hot press forming
Tee hot forming is to flatten the tube blank larger than tee diameter to the size of tee diameter.
Cold drawn tee
Cold drawn tee
Make a hole in the stretch 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 of the branch pipe. Different from the hydraulic expansion tee, the metal of the hot-pressed tee branch pipe is compensated by the radial motion of the tube blank, so it is also called the radial compensation process.
The tonnage of the equipment required for material forming is reduced due to the use of pressing tees after heating. The hot-pressing tee has a wide adaptability to materials, and is suitable for low carbon steel, alloy steel, stainless steel materials; In particular, tee with large diameter and thick tube wall is usually adopted by this forming process.
Partition by material
Carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon, pvc, etc.
Divided by production method
Topping, pressing, forging, casting, etc.