HG/T 20592  法兰 PL 200(B)-40 FM=72-)-16RFch30120-90 S=120S´=600 RFcomph-1.0

PL200(B)-40 fm=72-)-16RFch30120-90 S=120S´=600 RFcomph-1.0

BL 600-10 RF0 δa=1-1.

bl80(b)-100m5RF21mm-1RF

DN50-PN16 PL/W-B II4awscF=578=6

BL200-150FM(92f=100 خ´nr8000-074=45=4

SO 600(B)-25 RF

PL100B-16RF Sch403rfsc6

PL100-10 RF в… 46

WN32-150