HG/T 20592  法兰 PL 25(B)-40 FFF5-251sF00-ampa)fm=5

pl25(b)-40 ffF5-251sF00-ampa)fm=5

LWN 50-300 RF Sch80 L=42555/36 RF6.0/Sch80s1-1

LWN 500-900 RF B=5 SB1.6/009 bl40(b)-6

Bl20-16RfO2F0(-F@rfMFM010BRSHR46000-1(b)/�RF10RFF5BLH=1840rf SCH80=200fm615b.00160)25

SO 100-150FF R/п©б╘п╠Б∙

WN20-