HG/T 20592  法兰盖 BL 150-100 G H=76

bl150-100g H=76

LWN 150-300 RF B=176

3 RF 500-1.63.10=10

WN40(B)-40 t10000

pl 200-16 rfF B=27

PL 80(B)-6RFrf50Â

3 RF 500-6.4 خ´0=16

WN200-16RF B�

bl250(b)-100m´

LWN80-600 RF Sch80S-1./59-150 rff-1.000RLaa1s105 RF7�FD=519 C=34 b=0-300 RF