HG/T 20592  法兰盖 BL 56-10 FF

bl 56-10 ff

WN 250-10 RFF RF��@�

47021 C RF1000-0.6

WN 10-40 RF7 f1=2B=1667б=2

BL500-10 FF C=20

PL600-25 RF1222 SCH4@bl100-S�5 RJ

PL100 -10RF

BL 500(B)-25 FM07.5 RJRF��

WN50-300 M)-R

WN80-150 FM SCH40SF0-1.6F40sf800F0 RF0F1000-1.000pamp;