The large aperture tee is a kind of pipe fitting for the branch of the pipe. For the use of seamless pipe manufacturing three-way, the current process usually adopted hydraulic expansion and hot pressure forming two kinds.

Hot pressure forming: the three-way hot pressure forming is a tube that is larger than the diameter of three tong, and it is compressed into the size of the diameter of the three-way diameter, and opens a hole in the part of the drawing branch. The tube billet is heated and put into the forming mould, and the punching die is put into the tube. Under the action of pressure, the tube is compressed by radial compression. In the radial compression, the metal flows in the direction of the branch and forms a branch under the stretching of the die. The whole process is formed through the radial compression of the tube and the stretching process of the branch. In contrast to the hydraulic bulge, the metal is compensated by the radial movement of the tube billet, which is also referred to as radial compensation technology. Due to the application of heating, the equipment tonnage of the material is reduced. It is suitable for the materials of low carbon steel, alloy steel and stainless steel. In particular, the large diameter and the wall thickness of the three - pass, usually adopt this forming process.

In the radial compression process, the metal flows in the direction of the branch and forms a branch under the stretching of the die. The whole process is formed through the radial compression of the tube and the stretching process of the branch. In contrast to the hydraulic bulge, the metal is compensated by the radial movement of the tube billet, which is also referred to as radial compensation technology. Due to the application of heating, the equipment tonnage of the material is reduced.

1. To divide carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon, PPC, etc.

2. It can be divided into top system, pressing, forging, casting and so on.

3. The division of manufacturing standards can be divided into national standard, electric standard, water standard, American standard, German standard, Japanese standard, Russian standard and so on.