The whole process is formed by the radial compression of the tube blank and the drawing of the branch pipe. Different from the hydraulic expansion pipe tee, the metal of hot pressed pipe tee is compensated by the radial movement of tube blank, so it is also called radial compensation process.
Due to the use of heating and pressing pipe tee, the tonnage of equipment required for material forming is reduced. Hot pressed pipe tee has wide adaptability to materials, which is suitable for low-carbon steel, alloy steel and stainless steel; especially for large-diameter and thick pipe wall pipe tee, this forming process is usually adopted.