伞齿轮焊接闸阀 Z60Y-160,Z60Y-200,Z60Y-250,Z60Y-320,Z60Y-P54100V,Z60Y-P54140V,Z60Y-P54170V,
30


37.5


48


30


42


48


6.3




密封试验


17.6


22


27.5

01/22 09:43