GB/T 12459  偏心异径管 DN 80×65-9REF B

DN 80×65-9 REF B

PL400(A)-10 RF HG/T20

47065.3 C7F

HP-2-7.50S1313Sc.RF-2.550(ch4ch@47023HG/T2

PL 300(B)-16 RFRJC

BL 24"-150 RF-165v(b4

hg/t20592bl100-25rf f1.5 &

So100-600RF45F-25rftatch840 r/

WN25b-40M S=5

wn20(b)-300g()-/cn=2-RF-34h RFRF04500