HG/T 20592  法兰 PL 1400(B)-10 RF-1R

PL1400(B)-10RF-1R

PL 500(B)-10FF1.650 RF

PL600(a)-6RF75M)-10

JWN100x150(B)-16 RF S=6RF136RFRFF

PL 50(B)-25 RF42fRF900-d S=

pl50(b)-25 rf b=

WN40-300m-150rf-Rfcrh80ch40RF Sch

pl400-10rfRF041=3 b=0 R30

wn300-150 rf

DN 50-Sch40S 90EL6B=pampampampampamp;