HG/T 20592  法兰盖 BL 65-160 RF hg/t20.6 RF RF RF=1

bl65-160 rf hg/t20.6 RF RF RF=1

TH(Rc)50-6 FF H1=10 H=190/0

2B2RF40M4501�@/000-1 FRFH44m， h RJ272=1=6

PL25-40 mh00 RFRF80d55 rf01MF b54-1

BⅡ1800Sch80M12.5 &hF09

47023 G1200-4 S6c0h0 M rRF80-11pn

SO 500-6 RF0 MF0fM S=5F FFSB)-7)-R

WN100B-25 FM