GB/T 12459  同心异径管 DN 50×25-Sch40SRC�2=230-5 S=-1.0 d

DN 50×25-Sch40S RC�2=230-5 S=-1.0 d

WN 25-16RF B=21. h=647S=1479360F)-

PL200(B)-6FFRFt-1.0/64S1

WN40-1500 RJ Sch40撒R c0

BL350(B)-40RF/f70450-1.rfRF6F

bl50-10rf Sch82-416 RF A=FFa

BL32(B)-160 M85r

wn25-600 RF Sch160

WN 80-600 RF S=6FS.5

wn500-15