NB/T 47021  法兰 RF 800-0.25 δs=46-300

1 RF 800-0.25 δs=46-300

2 RF 1100-1.0/108-2050S0rf scF2-20

pL150-1500RF60 k=13051 sc99406F150-0cuot

PL 40(B)-16 RF 40 f1=3 s=325-

wn300-300 rj s=16RF.60R

wn15-600rjN10500-0.25-3

PL50A-10 FF ODF401.0/000-2

wn200-300g01225

LWN25-900 RJ B=226/56=в…