HG/T 20592  法兰盖 BL 300-63 M565FRF S=00ampampved=0a

BL300-63 m565FRF S=00ampampved=0a

PL50(B)-16 RF00-1.6g=t20592-20¡.00 RF RF0M)-000-

wn350(b)-40fm126 R=44 H=0-0.6H=1603

wn250-300 rf hg/t2061542-120h10S

WN 450(B)-40 M S=13 R= H1=

DN 250-Sch100 C60K=-40MRFRA)-

WN 40(B)-25RF=21 H=2220 R98m s=12t400-15