HG/T 20592  法兰 WN 65-25 RF’/1=3

WN65-25Rf’/1=3

47023 fm 650-1L50-0(SCH80S S=8/-1.60-F/-1

so40-150RF)F/1302051h40rfFM=450 RF B=RF304086F=δs=RF ScS=10

wn 200-100 rfF S=-25 RFfmF-25 RF-10 RF/

47023rf1000-46516 RF0=250 RF

WN450(B)-40 FM S=в•ӨГӮО“Г

WN100-300 RF B=15Fch2C

WN