GB/T 12459  弯头 DN 40-890ELF Sc=10016

DN 40-8 90ELF Sc=10016

wn450(b)-40fm s=8)K=4 r

bl300-10 fm500-0.6/70-10rfc=620RJ1.0

wn600(b)-25 rf c=70 h=5/RF0 rf0-0.6 s/2K=6c-1.0/42-9.h-127

wn200 -150 rf10

bl 40-40 m90S0-4.0/5-5850-16rf6 R

so50(b)-40rf 4ã.fF/RF1

WN100-600 RJ Sch80 AA=52.

WN25(A)