HG/T 20592  法兰 PL 500(B)-6 FF RF RF--300150h=RF00RF/c2/ rf�

PL 500(B)-6 FF RF RF--300150h=RF00RF/c2/ rf�

WN 1"-300 RF Sch80

WN 6"-900 RJ Sch40SRF target=ch80Fdefined=M

SW 6"-150 RF

wn250(b)-25rjc

PL 600-16 RF D=1015

DN200-PN10 WN RF I

sp-3-8-1636-904h30S99/u00-1.

pl250(B)-16RF

WN 500(B)-16 R