GB/T 12459  弯头 DN 300×200-Sch3090ELR130rf

DN 300×200-Sch30 90ELR130rf

PL 400(B)-16 RF

wn 80-16 fm

WN 80(B)-6 RF

BL200-300 RFB(B

wn300(a)-100 rf

PL 80(B)-16 RF

wn500-25m δ=10

pL20(B)-10 RF

WN 80(B)-10 RFp;amp;amp;amp;ampampampamp;amp;quothg20615 wn400-600rj-300 LMFampa50-16RF