HG/T 20592  法兰盖 BL 250-10 GRFF b=2-16 R45 rf b=3

BL250-10GRFF b=2-16 R45 rf b=3

WN500(B)- 40RF5f1=2.5 b-=14r17N8-1

wn150(b)-16RF b=2 f1=3

47065.3B5h8RF3406F0rf40sch80u target= RFC7S0e/

PL 150-16 RF)0-RF/

支腿A5-850-10

hg/t20592 wn100-25 rf/77991bb=1lF517)-1

WN15-150RJ Sch4F00�

WN25(B)-16 M s=4