1. Alloy three-way pipe fittings are generally used for regulating valve devices, using drainage.  Concentric reducer is beneficial to fluid flow and has little disturbance to fluid flow pattern at the time of diameter change.  

 
2. Alloy tee fitting uses concentric reducing pipe to reduce diameter in gas and vertical liquid pipeline.  And because it is flat on one side, it is conducive to exhaust or liquid discharge, convenient for driving and maintenance, so the liquid pipe of horizontal device is generally made of alloy tee pipe fittings.  
 

3. Alloy tee pipe fitting is a steel elbow formed by hot pressing or forging. Its connection mode is to directly weld the tee pipe fitting to the steel pipe.  The primary production specifications of alloy tee pipe fittings are GENERALLY GB/T12459, GB/T13401, ASME B16.9, SH3408, SH3409, HG/T21635, HG/T21631, SY/T0510.  
 

4. Alloy tee pipe fittings generally have equal diameter tee pipe fittings, reducing tee pipe fittings, etc., and the materials are carbon steel, alloy steel and stainless steel.  

 
5. Alloy tee pipe fittings when the chromium content in the steel reaches about 1.2%, chromium and oxygen in the corrosive medium form a thin oxide film (self-passivation film) on the surface of the steel, alloy tee pipe fittings can prevent further corrosion of the steel matrix.  In addition to chromium, commonly used alloying elements are nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of various uses for the arrangement and function of concentric reducer.