HG/T 20592  法兰 WN 25(B)-16 RF S=4 A=34m Sch40s=8

WN 25(B)-16 RF S=4 A=34m Sch40s=8

WN65(B)-25RF S=7S16 RF ff10L150(B)-b42-2h392/5 Sorum-116R

HG/T20592 PL200(B)-6G=350FFrfH40 rf0 S=10

1 CFM 500-0.6 δs=6_36 rfδ0=≥12

WN 350(B)-16 RF S=10RF25RFRFF S=6=500-1.60

WN 900-40 RFRFSc H=3010.31RFf16=RF B=4