HG/T 20592  法兰 WN 150-25 T160=F RF S=3.50-4.0/104-2300

wn150-25t160=F RF S=3.50-4.0/104-2300

PL250(B)-16 RF=100FHG5 r5MS=B)-S6F6ampampamp

法兰WN500(B)-25 RF S=12h16f0-25rF-175 s=1850)-u008

WN 25-300 RF Sch40S

wn200-150 rf s=8101 H=235/6ampampampamp

WN15(B)-100FF=15960я=500

wn200-300rf sch1 4-F B=12