HG/T 20592  法兰 PL 800-6 RF=61=3 S16F sS RF b

PL800-6rf=61=3 S16F sS RF b

WN80-63RF-4.0c0f15rf1505-R541PL250(B)-16Rm

WN 40-300 RF Sch40S.0vokerF shc

3 CRF 650-1.616R=12 S=6M34=8rf sFgkg4ryF=60/70-/Cd=FRFampRFRF 10

WN80-300T80s/16 RH=4SHru8-2=5&qu0a=rffRF00F S-42b)-h8-

LWN 80-150 RF B=105-150/nb