HG/T 20592  法兰盖 BL 50(B)-63 RF1S

BL50B-63RF1S

SO25B-40 RF

WN 20-1500 MfScS

PL300(B)-40 fmF S=511d=215.6RF f B=10

PL 80(B)-10 RFn8m S sch8RFRFH2-130G7

BL50B-16 RF

BL 40-150 RF/data

WN 40-150 RF Sch80S/data

WN 300-300 RF

PL32-16 T77F2.50-L RF Ⅱ10FD=200C=16L=19BS009450m5 B=241=6Sch4