HG/T 20592  法兰 PL 200(B)-25 FF RsS4b=1h110-100-0.2

pl200b)-25 ff RsS4b=1h110-100-0.2

wn400-1500 rf sch/

LWN50-1500 RJ S=11.2 SC

eha1200×12J5-2

SO 25(B)-16 RF0GB/T500ef/300

PL900(B)-6 RF=rf00-1.0 δ FM S=4/u00FF

wn25b)-160rf/5u3 d=1-250s/

1 FM 900-0.6.6 n=28 CC=17RF S=3 S50(b)

WN 80(B)-16 FFSА=1