... and copper, high quality,good looking, long service life. male thread tee.Available size: 20*1/2M, 25*1/2M, 25*3 ... toughness and shock resistance.6, Beautiful and practical: both inner and outer of the pipe is smooth, with little fluid ... Easily fix and reliable: use fusing welding no need to thread rolling, it can finish a joint in just a few ... be normally used in 50 years or longer. female thread tee