HG/T 20592  法兰盖 BL 400-16 M/10RFMaRF0Ssch1F50(.5 RJj@5c2@RF@4JsRRF RF S=3.51.0s=3.66rfFFt Std9@45

BL400-16m/10RFMaRF0Ssch1F50(.5 RJj@5c2@RF@4JsRRF RF S=3.51.0s=3.66rfFFt Std9@45

WN 500-300 RFHG2F≥5

法兰WN50-150RF RF10h4RF Sc600 RF Sch0-

bl 40-600rf05=60(b)-16rfh4020525

BI 77763

BII 376600700 FM Sf.51504@

wn500(b)-25rf s=6-

PL 80(B)-25 RF

WN 1