Classification of stainless steel tee

It is a pipe fitting used at the branch of the pipeline. For the manufacture of tee joints with seamless pipes, the currently commonly used processes include hydraulic bulging and hot press forming. The hydraulic bulging of the stainless steel tee is a forming process in which the branch pipe is expanded by the axial compensation of the metal material. The process is to use a special hydraulic press to inject liquid into the tube blank with the same diameter as the tee, and to squeeze the tube blank through the synchronous centering movement of the two horizontal side cylinders of the hydraulic press. The pressure of the liquid increases as the volume of the tube becomes smaller. When the pressure required for the expansion of the stainless steel three-way branch tube is reached, the metal material flows along the inner cavity of the mold under the dual action of the side cylinder and the liquid pressure in the tube to expand the branch tube. . The hydraulic bulging process of the stainless steel tee can be formed at one time, and the production efficiency is high; the wall thickness of the main pipe and the shoulder of the stainless steel tee are increased. Classification of stainless steel tees Due to the large tonnage of equipment required for the hydraulic bulging process of stainless steel tees, it is currently mainly used in the manufacture of standard wall thickness stainless steel tees less than DN400 in China. The applicable forming materials are low-carbon steel, low-alloy steel, and stainless steel with a relatively low tendency of cold work hardening, including some non-ferrous metal materials, such as copper, aluminum, and titanium. According to the manufacturing standard, it can be divided into national standard, electric standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc., as follows: GB/T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/ T21635, DL/T 695, SY/T 0510, DIN 2615.