HG/T 20592  法兰盖 BL 20(B)-6 RFRFlt

BL20(B)-6 RFRFlt

WN40(A)-100 RJ S=4

BL 25(B)-16 RF

WN80(B)-16 RF41840

BII 30020

PL40-16RF(b).6RF71501

bi 773

WN50-150 RF Sch1687Sch417¦1=rum10RF212245@R4Sc2@RF@443

PL150-6FF

DN125-PN16 WN RF Ⅱ S=4.5 SF.51 æ0-600 FM80FfFS=5.5046 δs=645 Sch40SN=89