Overview
Stone for the pipe, pipe fittings. Also known as pipe fittings or four-way fittings, four-way connector, used in the main pipeline to branch pipe. The four ends of the same diameter and diameter of the same size, and the size of the branch pipe is smaller than the size of the main pipe. Stone is a pipe for pipe branch.
Hydraulic bulging
Four-way hydraulic bulging is the metal material through the axial compensation expansion branch of a forming process. The process is the use of special hydraulic press, will be equal to the diameter of the tube into the liquid tube, through the hydraulic machine two horizontal side of the cylinder to synchronize the movement of the tube extrusion tube, the tube is pressed after the volume becomes smaller, tube Of the liquid with the tube volume becomes smaller and the pressure increases, when the four-way pipe to expand the required pressure, the metal material in the side cylinder and tube under the dual role of liquid pressure along the mold cavity flow out of the branch pipe. Four-way hydraulic bulging process can be a forming, high production efficiency; Stone's head and shoulder wall thickness have increased. Due to seamless hydraulic bulging process required equipment tonnage larger, the current domestic mainly used for less than DN400 standard wall thickness of the four-way manufacturing. Its suitable forming materials are relatively low hardening hardening of low carbon steel, low alloy steel, stainless steel, including some non-ferrous metal materials such as copper, aluminum, titanium and so on.
