HG/T 20592  法兰 SO 50-25 RF s=82´=5 RJb

so50-25 rf s=82´=5 RJb

so 400-150 RF sJS=3 Sch4/@�FK Am� 2.1 RJb��h5R5 RJ FS RJ0F@4702M Sch80·

WN256-150 RF0F10 rf10-000-R

WN20b-63fm100-05rb)20��.�.5 RJ R092-

SO 40-150 FFRF2-5

SO 500(B)-16 RF

PL 80-10 RFa0f RF1.0R0-RCH107

WN350-