
Pipe ("gas") Threads Where Pressure - Tight Joints Are Made On The Threads - Taper Male Thread And Parallel Female Thread
出版:Association Francaise de Normalisation

专家解读视频
Pipe ("gas") Threads Where Pressure - Tight Joints Are Made On The Threads - Taper Male Thread And Parallel Female Thread
出版:Association Francaise de Normalisation
专家解读视频