HG/T 20592  法兰盖 BL 200-10 FF –њвЦ�-2.5 Ãf schrc)-10r2.0.611�ќЉл┐

bl200-10 ff –њвЦ�-2.5 Ãf schrc)-10r2.0.611�ќЉл┐

BL50-25 RFf/B)-2FFF WN FM=2.56mppampF4 F

PL 25(B)-100 RF/46-1

PL100(B)-6RF10MS S/a.htm

lwn80-600 rf4

WN 100-40 RF SCH40p

SO 100-150 FF=100 H=1F RFF)-14520615

wn125(B)-150 RF

NB/T47023 R