HG/T 20592  法兰盖 BL 450-16 Mt00-4.)0@RFerff6@40HS5

BL450-16Mt00-4.)0@RFerff6@40HS5

BI800F0M S=64S0

WN15-300 RF Sch40pschmp@47c600-6@40@40HS5 RJF� RFMam��@S-�0-

SO50-150 RFu0F6rf3 S=3 H=58=50

LWN450-150 RF Sch4�77.5 RJch4�77.5 RJF�77.5 RJFRFch0 RFFRF FF Sch40067

WN 200(B)-25 RF S=8

SO6