HG/T 20592  法兰 PL 90-6 FF/f400 R=1

PL90-6 FF/f400 R=1

WN 150(B)-25 M S=3F@F=3 RFF2300a26S�š�R

&ampampampampampampampquot;wn100-300rf s=8

WN 32(A)-25 RF/6100-3-150 RF Sch10S5 M=2-300/=4.5/f/G

WN600-300 RF S=1020Sc40S.506 s=35008103/uampampampamp

WN 400(B)-25 FMF0-2.T20615G

SO