HG/T 20592  法兰 PL 250-25 RF0F206c8.pngp k=166 na=1ch40H40S-1

PL250-25rf0F206c8.pngp k=166 na=1ch40H40S-1

SO 600-150 RF B=513.5

SO 150(B)-25 RF

&ampampampampquothg20615 wn450-600rj&ampamp;amp;ampampquot

wn200(B)-25RF K=.10c/00-1�

20592pl125b-16rf00.52.5=5760

1 RF 900-1.0 δs=20

47023fm1800-1.0/8

WN600-4