HG/T 20592  法兰盖 BL 40-16 RF15 b•5lass600

BL40-16RF15 b•5lass600

wn100-150 rf s=6.35000

PL150(B)-16 RF6 RF60 RF Sch6000-

SO 20-150 RF-25fm=4 c

wn125 -10 rf5F0A150 RF Sch80/ampamp

wn 20(b)-100 fm=6B=52.3.50RF0730(

WN75-600RFh600���@4п▓�1 Râ€��

WN 16(B)-150 RF0

wn150-160rjf