HG/T 20592  法兰 WN 50 -63 M.htm δ=S-

wn50 -63m.htm δ=S-

WN50(B)-100RJ Sch40S0Sch

BL 500-150 Ggcad.-10ffF5F S=1060×1516 RSCH80S0-0 R

LWN4"-150 RF SFA)50(B)-25M6m s=A/wn00 h=u

47023FM1400-0.6FMf/1.h40RF B=726120300 M RF

WN32(B)-100 FM592-2009R(b)-16 rf8rf S)-150FF.5

bl500-10rfd=61.