HG/T 20592  法兰盖 BL 300-10 RFh80S300 LG06rf0L FFG/80 FF-1.655-R@0uot RF-0.3

20592bl300-10rfh80S300 LG06rf0L FFG/80 FF-1.655-R@0uot RF-0.3

BI 500

SO 2 1/2"-150 RF

DN250-PN100 WN M Ⅱ

WN80(B)-16 RF

支腿 BI500

PL 250(B)-10 RFF-mpampampampammpampquot

PL 25(B)-25 RF

PJ/SE 150(B)-16 RF S=4

WN 2"-900 RF Sch10(b)515J63-