GB/T 12459  偏心异径管 DN 600×10-Sch80SRE

DN 600×10-Sch80S RE

BL100-40 RFch45RF80/2-

bl40(B)-25 M/â1623/4

PL40(B)- 16 RF0-16

so40(b)-25rfhg/Sch4/i 10008 b=0 B=61.

SO 80-25 RFF fsTDch

wn250-300 FMRF=ac2/ M.90RFRJSch

so 80 -16 rf/0f/2b)-600

WN80-300RF0h40RFRF5

WN100-300MF/T9F00T B=73.700‚6