HG/T 20592  法兰盖 BL 300(B)-16 RF34FF6k=958

BL300B-16RF34FF6k=958

BL300-300 Rf.6/36-97Gs=70-1.

wn80(b)-25t/f5d=100036-9 M0SRjT00(B)-10 RF S=625

WN 600-150 RF Sch120

PL125(B)-16 RF b=5 f1=/âs

BL20-63FF=334404-15 wn350-6CH40=1S=6F/6S=0b-40rfg=5

20615 Lwn100-300 G B=100 H=322

PL300(B)-10RF900 RF