HG/T 20592  法兰盖 BL 450-10 RF Б─⌠п║п╡п≤п╘п╡п╔п╖Б─■п

47021 m300-1.6‚´0=104/ δ=98 h=1801=18 δ

WN25-150rf sch8=2 d== B=3 δ2=12/70-165RF00F.08S=61410=8

bl450(a)-10rf Б─⌠п║п╡п≤п╘п╡п╔п╖Б─■п

pl100(b)-16 rf d=1295 n=32 l=33 c=40 f1=3 b=5 b1=1000

WN150-600RFRF63@Ampampq