HG/T 20592  法兰盖 BL 300-63 M50-150 RF4t600A@40@S5 RJrv s@RFSp& 4

BL300-63 m50-150 RF4t600A@40@S5 RJrv s@RFSp& 4

WN 25-1500 M Sj h=/f18)/176-26Rh40LhF H1=1=4=8f r

bi 5694

IF 400-300 RF-O80-100rfF5 δ=72S=400-4.0R

3 B3975

WN80-100RF S=12.5rfrf31äSc

DN250-PN10 IF RFFch60@RF@4 Rch44060f RF Sch12.5 RJ-R�R

3 B6410