HG/T 20615  法兰 WN 50-300 FMD=K=N=C=n=H60T S=8F-20.00 R=1GF

WN50-300FMD=K=N=C=n=H60T S=8F-20.00 R=1GF

wn65-900 rj sch160 rf�-11115842

WN500-300RFCH4mlRFN=/(B)-10H=1RJ=8

SO100(B)-150 RF d=157.

wn15-300 rf s=6F2c

47023 rf600-4.0/62-12 s=900

WN 300-150 FF S=7/1

LWN400-150 RF b=1 H=238

BL100(B)-25 T/ B=1

wn65