HG/T 20592  法兰 PL 300(B)-25 RF b) 20s0-2F S=3 scpampampampq

pl 300(b)-25 rf b) 20s0-2F S=3 scpampampampq

BL 500-600 M/ wn100(b)-16 m/(0-150 RF°wn400-15/

47022g900-1.6 b= S=6

wn15-10t1.0hD30H40Sh20sFRF h=200-ta

lwn40-150 rf b=340 m0-16550 R

WN350-300 RF S= B=498â¬

SO300(b)-16 RF

BL500(B)-16 M C=40 f2=3-1

B