HG/T 20592  法兰 PL 250(B)-16 RF K=350 f1=3 C=

PL 250(B)-16 RF K=350 f1=3 C=

wn 25-600 RF=10./8 H=390-66R600-0.

BL 24-600 RF)-16R/ B=3/30/5921=/5921=RFT

PL300(B)-16 RFg592fδ1=3B)-16

wn250-1500 rj sch80)ii 6S00-150 RF S30g-h405F 595*

wn150-160rf b=152S=14Fb)-2AH40frfF

wn300-600fm,-0

WN 400-150