HG/T 20592  法兰 PL 450(B)-16 FFs=5 h

PL 450(B)-16 FFs=5 h

WN16"-150 RF S=601�

WN 300(B)-100 RF S=14rf0-4

WN20-300 RF Sch40DFb16 RF Sch0.6.6/M6uothg20615 wn3552.6f s

WN250(B)-16 RFCH00-5

47023 m 1000-4.0/forumv.0B)-1056F841.5-/10

WN 50-16 FF=319468O100(19

BL 100-10 RFF=19/RF)--pa