Butterfly valves: double flanged, lug and wafer type, and butt-welding ends API Standard 609
Butterfly valves: double flanged, lug and wafer type, and butt-welding ends API Standard 609
API 609
- 9a. ed.
- Washington American Petroleum Institute, API 2021
- 25 p.
= Std 609
Normalización
Normas API
Caja 17
Normalización
Normas API
Caja 17



