NB/T 47021  法兰 FM 600-1.6/40N=600

47021-FM600-1.640N=600

A WN1000-150 RF B=972

SO 200-300 M50rf=500 δn=10 H0=400/@0RF5.Sch40 RF@RF@f RF

WN500-150 RF ASME16/

pl250a-10 rf a4mm4sch40150

WN 40(B)-63 RF.3h12801fs1H80S8/ RF@4

WN500-600 RJ s=12pampampampampwd=&a

wn80-150 rf b=66.5F@pl/