Stainless steel Union is used to connect the pipeline, it is a 3
part structure, there is an nut in the middle part of the union, so
the unions can be fixed and removed easily. Also, the unions have
different connecion end types: male thread, female thread and butt
welding type. According to different application area, the
connection types can be composited flexibly according to different
requirements. Like Male thread + Female Thread; Male thread+Male
Thread; Female Thread+Butt Weld.