HG/T 20592  法兰盖 BL 500-10 RFFh1=10

BL500-10RFFh1=10

PL50(A)-16 M b=0Sch4060WN40-40 Mf s80(A)-1646-1FFM600

so80-300t640FF1250sM.50RFSch80 b=300RF5=3

wn25-100 rf s=5f s=16.0δ=70 h=165 RF Sch80S S=6sc

SO500(B)-16RF

SO 500-150 RF s=8b=400-1RF b=2S=4.00

wn250-600rj-9 Hm16

WN 50(B)-25 FM