HG/T 20592  法兰 PL 25(B)-25 RFR4.50-

PL25(B)-25 RFR4.50-

LWN80-300 RF B=77.5 Lam5

47021 C-rf700-0.64R=60FH1S=4

so 400(B)-16 FF

AXA-1 S1=.6/6

bl32-10RF02 RJ25 WFM@4054210Fj@5@F S640SRh40S0.40(lMfS(B)-25RF1@

WN250B)-25MF

47023 m1500-1.6C=26 H=56C-

3 FM 500-6.4 δ0=16

1 RF 900-0.256 ff006