HG/T 20592  法兰 PL 150-25 RF b=3

PL 150(A)-25 RF b=3

WN40-10 RF S=6

WN300-300 RF sch600 d=610 bb=RF

WN 2"-300 RF Sch10S f=2

wn1000-16 RFsc

SO 1200(B)-10 FM RJ15fM7

BL 600-1500 RFs

WN 80(B)-10 RF S=5.

bl500-300fm8/ M S=125δ/

wn350a-300rf.6)RF)-16S=2.5W4C1.01)-16rf080Sch800616