Stainless steel tee fittings

Stainless steel tee is a type of pipe fitting used at pipeline branches. For the production of tees using seamless pipes, there are currently two commonly used processes: hydraulic bulging and hot pressing forming.
The hydraulic bulging of stainless steel tees is a forming process that uses axial compensation of metal materials to expand branch pipes. The process involves using a dedicated hydraulic press to inject liquid into a tube blank with the same diameter as the tee. The two horizontal side cylinders of the hydraulic press move synchronously to center and squeeze the tube blank. The volume of the tube blank decreases after being squeezed, and the pressure of the liquid inside the tube blank increases as the volume of the tube blank decreases. When the pressure required for the expansion of the stainless steel tee branch pipe is reached, the metal material flows along the mold cavity under the dual action of the side cylinder and the liquid pressure inside the tube blank to expand the branch pipe.
The hydraulic bulging process of stainless steel tees can be formed in one go, with high production efficiency; The thickness of the main pipe and shoulder wall of the stainless steel tee has increased.
Due to the large equipment tonnage required for the hydraulic bulging process of stainless steel tees, it is currently mainly used in the manufacturing of standard wall thickness stainless steel tees with a diameter less than DN400 in China. Its applicable forming materials are low carbon steel, low alloy steel, stainless steel with relatively low cold work hardening tendency, including some non-ferrous metal materials such as copper, aluminum, titanium, etc.
According to manufacturing standards, it can be divided into national standards, electrical standards, water standards, American standards, German standards, Japanese standards, Russian standards, etc., as follows: GB/T12459,GB/T13401,ASME B16.9,SH3408, SH3409,HG/T21635,DL/T 695,SY/T 0510,DIN 2615。