GB/T 12459  异径三通 DN 350×350×25-Sch10TRT TR60sch

DN 350×350×25-Sch10 TRT TR60sch

WN50-300RF R1 b=0cR5 RFRFRF M B=14

PL250(B)-16 FF b6300(B)-1

WN50-25ff S=5.-1150592-16FMwn600 RF S=4

WN50-300T SCH10)-25rf6-909/

LWN 500-900 FM Sch14060 fm s=12.5RF550F-/fF0M1610 RF50FB)-16RFF1200=50h40RF0-0.66S=

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