HG/T 20592  法兰盖 BL 400-6 FFRFRF-2 R

BL400-6 FFRFRF-2 R

wn350-600Rj605rf c

SO 50(B)-6 RFFF00 M/u00

BL 200-150 RF S=08

BI500-F/0rj040ÂF0RF

BI 1200 �1.0 RF1.RF0-8

WN50(A)-16 RF-160RJ

BL400a)-6RF10 rF F0-)-1

2 A10

wn80(b)-63fmsf-06Sch10010rfB)-16 RF B=aRFpFR=(B)fS=43.550200rfF½8h16 R