GB/T 12459  同心异径管 DN 200×100-Ⅱ-12RC=40=00-150fT91

DN 200×100-Ⅱ-12 RC=40=00-150fT91

WN150-150 RF

NB/T47023 FM400-1.6

DN32-PN250 WN RF â…، S=3.5=0 G Sch

PL 300(B)-16 RF

法兰 WN 500(B)-16 RF S=10=553F n

LWN15-1500RJL.2593mpamp0-1.0/0 RCFM-140sR=45

pl80-40rfb=3C=36ذ آ°ذ²â€‍–

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