GB/T 29465  法兰 RF 1850-1.

5 RF 1850-1.

so600(b)-16 g.5 )a)-16r´=1=8cfo20-16r�60-0=0

WN500-300RFCH4mlRFN=16δ=-150 RF

WN80-2500 RJ010-2017450-1S.

WN15-300 RF H1=60SFFRF

wn400(b)-25ms=1FDRFRFF S �hg=0a

WN 80-300 RF Sch40B)-25 RF S=68

DN 40-Sch40 TS-150FF=4 TRrf1000-1.010r