GB/T 12459  异径三通 DN 550×550×300-Sch60TR

DN 300×300×550-Sch60 TR

so100-300 rf=trackback

WN100-16RFб╒F/00c3/u

LWN450-600 RFF D=

DN 40-Ⅱ-3.5 90EL9921.020RFMF

wn50(a)-100 m a=60 s=5=55200S=10300-0.25rj

WN80-600RJ HG/T2010RF h=15ch.1600B)-5RsJ5RC4

PL150B-40M b/s M3=1Sc16FM480 K=435 B)-

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