HG/T 20592  法兰 PL 40(B)-16 FF b=4

PL40(B)-16FF b=4

A WN 650-300 RF B=624

LWN20-300T TR6Rjpampquoth

wn100-150 rf sch40s D=5

A WN24"-300 RF S=16

WN65-150FF3016RF/t2-1

PL50-10RF B1=59mpampamp

SO 100(B)-16 RF

pl300-16RF1=4=54

PL 500-10 RF=8mpampampampampampampampampampampampwd=&a