Hydraulic Expansion

Professional hydraulic presses are required. First, add liquid to the billet. Then, activate the press, and the two horizontal side rods will push towards the center. As the billet is compressed, its volume decreases, and the pressure inside the liquid increases. Once a certain pressure is reached, the billet flows and expands into a branch along the mold, forming a tee. This production process is commonly referred to as cold drawn tee.

Hot Press Forming

We require pipe blanks larger than the three-way pipe size as raw materials. These blanks are compressed to the required three-way pipe size, and holes are drilled in the branch section. Next, the material is heated and placed in a mold. Meanwhile, a punch mold for stretching the branch is inserted into the pipe blank. The pipe blank is then compressed radially using a hydraulic press, forming a three-way fitting. The distinction between these two processes lies in the fact that the branch formed by hot pressing is compensated by the radial movement of the pipe blank, which is also referred to as radial compensation technology.