，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 a tube blank larger than the three-way diameter to approximately the size of the three-way diameter, then drilling a hole at the location where the branch pipe is to be stretched; the tube blank is heated before being placedMolding 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.