What are the three links? Tee materials are cast iron, stainless steel, alloy steel, cast iron can be calcined, carbon steel and so on. The connection ways with the pipe are: direct welding (the most common way) flange connection, thread connection and socket connection. Pipe installation in a common connection with a pipe for the connection outside the bend. Connect three pipes of the same or different nominal diameter to make the pipe turn at a certain angle. The classification of tee: reducer tee, Y tee, high pressure tee, etc. The material is divided into: carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, etc. The production method can be divided into: pushing, pressing, forging, casting and so on. The forming of the tee joint is to flatten the tube blank larger than the tee diameter to the size of tee diameter and open a hole at the part of the stretched branch pipe. The tube blank is heated and put into the forming die, and the die for drawing the branch pipe is loaded into the tube billet; In the process of radial compression, the metal flows to the branch pipe and forms branch pipe under the drawing of die.
The whole process is formed by the radial compression of the tube billet and the stretching of the branch pipe. Different from the hydraulic bulging tee, the metal of the branch pipe of tee joint is compensated by the radial motion of the tube blank, so it is also called the radial compensation process. The tonnage of equipment required for material forming is reduced due to the use of post-heated pressing tee. The hot-pressing tee has a wide adaptability to materials, and is suitable for low carbon steel, alloy steel and stainless steel. Especially for the tee with large diameter and thicker wall, this forming process is usually adopted. The stainless steel tee is a kind of pipe fitting and pipe fitting, mainly used for pipe branch.
Classification of Three Way Joints
1, according to the diameter of the pipe generally have equal diameter tee, diameter tee.
2, in accordance with the direction of the branch is divided into three and three oblique.
3, according to the material points carbon steel, alloy steel, stainless steel, copper, pvc and other tee.
4, according to the connection way divided into ordinary tee, thread tee, card set tee, socket tee.

  1. Three links are indicated as follows: For equal diameter links, such as “T6” links indicate equal diameter of 6 inches.
    Divided by material:
    Carbon steel, casting steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon Ge Li, PVC and so on.
    By production method:
    Top, pressing, forging, casting, etc.
    By manufacturing criteria:
    National standard, electric standard, chemical standard, water standard, american standard, german standard, japanese standard, russian standard, etc., as follows: GB/T12459-2005,GB/T13401-2005, ASME B16.9,SH3408,SH3409-96,SH3410-96,HG/T21635,DL/T 695,SY/T 0510,DIN 2615。
    For reducing tees, for example, “T4 × 4 × 3.5” means a reducing tee with the same diameter of 4 inches and a reducing diameter of 3.5 inches. Pressure rating and elbow pressure rating are the same, the specification range is the same.
    Classification by diameter
  2. Three links with the same diameter: three links of the same diameters of the main pipe and the branch pipe
  3. Three links of different diameters: the three links with branch pipe diameter less than the main pipe diameter are classified according to the docking form
    1, welding tee: that is, and the connection pipe joints welded tee pipe fittings.
    2, socket tee: that is, the connection pipe fitting inserted into the end of the tee after welding or welding of tee pipe. 3, the card sleeve tee: that is, the end is card sleeve connector, the pipe after the insertion
    Re-tighten tee fitting.
    4, threaded tee: threaded way connection pipe fitting tee. Classification by material
    Can be divided into stainless steel, carbon steel, copper, PVC, etc. Classification by branch form
    1, is three: is the branch pipe vertical head of the three pipe fittings.
    2, oblique tee: is the branch pipe and the main three-way pipe has a certain angle.