HG/T 20592  法兰盖 BL 200-63 FMлйРЋб=68 H=170 l-3703.phh

BL200-63fmлйРЋб=68 H=170 l-3703.phh

PL400-10RF δ=2@68-31D=519 C=34 b=0-300 RF

WN200(B)-16 RF 10s

PL 100(B)-16 RF C=19+ f1=2.5 D=184 b=3

PL15(B)-16RF480 N=640 n=24 L=23=

WN 200(B)-63 RF S

1C-RF800-0.6FM-0=B)-1B=21Fn2r=jm

SO 65(A)-40 M

WN 2