，Three-way connectorPlease refer to the branch pipe department. They can be categorized by pipe diameter. Carbon steel is generally used.Cast Steel，Stainless SteelThree-way hot forming involves flattening the billet larger than the three-way diameter to approximately the size of the three-way diameter, then creating a hole at the location of the extension of the branch pipe; the billet is heated and placed intoMolding dieUnder pressure, the billet is radially compressed, during which the metal flows towards the branch pipe and forms the branch under the stretching action of the die. The entire process is shaped through the radial compression of the billet and the stretching of the branch section.