Piping Engineering : Valve hydro testing (body, seat & backseat)
GOURI SANKAR SAMANTA
0:00 / 0:00
Piping Engineering : Valve hydro testing (body, seat & backseat)
23 847 просмотров · 4 г. назад
GOURI SANKAR SAMANTA
24,1 тыс. подписчиков
23 847 просмотров · 4 г. назад
G. S. Samanta : Engineering & Educational
