HG/T 20592  法兰盖 BL 500-6 RF hg/t2059M B)-1t11-1650s-1

bl500-6rf hg/t2059M B)-1t11-1650s-1

BL600-600 RF� 625

WN350(B)-10 FF S=4 C=2-16FRF�=176 MRF800RFDS

WN25A-100T80-429

PL80(B)-16RF b=3Fc=0s2rf1000-1.0L= K= NB=/R

LWN 100-150 RF H=200 B=96.5W/SCh8/8/54-1958rum.htm

SO 40(b)-16 RF D=125Fh b=

wn65-300