NB/T 47022  法兰 RF 500-1.0ch80S00e5/public

wn25(b)-160RJ S=6

WN125(B)-100RF)-150rf425 m RF 501

HG/T20592-2009 BL32-25 RF

WN 2 1/2"-150 RF0ESr

HG/T20592-2009 WN15-16 RF

WN 25(B)-63 RF C=26.0/-190=495Smpa

WN 250-600 RJ9 WN4

4021FM400-1.0F/FF8 HG 130/PL R77.5 RJ Schs=RJ S=116.5r

wn15-3