GB/T 12459  同心异径管 DN 50×40-Ⅱ-3RC

DN 50×40-Ⅱ-3 RC

WN32-63RF

WN150B-150RF/rf3)-10

PL300(B)-16 RF C

wn50-1500 rf rj

WN15b-40mFMrf-10 R

so25b)-16rfB1=

B WN 1200-300 RF S=13

PJ/SE 15(A)-40 RF

WN 300-10 RF S=6h80 d=50h80h2=2440 FFFF HG/2.s=11LFMRF δ=366SCH40O-15п▓�� 20 R7.5 RJ