HG/T 20592  法兰盖 BL 700-16 RF/b=300-15

20592 BL700-16RF/b=300-15

PL 600(B)-10 RF n=24

PL50(A)-10 RF0FM S=4=1S=4.4/112-25

WN 1 1/2"-150 RF Sch80S

20615 LWN25-150RFSch80sS1=3 b=3h4

WN20(B)-25 RF S=4m-125F20600.5RF

PL125(B)-25RF b=4 D=1603 A00S38 A10-16R=323.6B

5 CRF 1850-6.420δ0=20

WN