General purpose gear units for petroleum, chemical, and gas industry services API standard 677
General purpose gear units for petroleum, chemical, and gas industry services API standard 677
API 677
- 3rd ed.
- Washington American Petroleum Institute, API 2006
- vii; 81 p.
= Std 677
Normas API
Normalización
Caja 19-A
Normas API
Normalización
Caja 19-A



