HG/T 20592  法兰盖 BL 50-16 RF0RF s=6WN0b-�a

S31603BL50-16RF0RF s=6WN0b-�a

WN 150-63 M09 sch8F s=30(A)-10RF50RFf.6/4

BI 2000

WN 20"-150 RF Sch40;-150 RF Sch80)-ffb15

SW 3"-150 RF

WN 25-300 FM S=3.5160pquoth4 δ

SO 500(B)-16 RF

PL 65(B)-16 RF b=4

WN 40-150 RJB)-25 FM3h014Fh150RF

BWN