This standard is applicable to mixed flow, diagonal flow, and axial flow (tubular flow refers to axial flow) bucket turbines with a power greater than 10 MW, as well as butterfly valves with a nominal diameter of 1000 to 8000 mm, and butterfly valves with a nominal diameter of 500 to 2400 mm. Ball valves and other products.
JB/T 56078-1996 history
1996JB/T 56078-1996 Product quality classification of large hydraulic turbines