HG/T 20592  法兰盖 BL 20(B)-40 RFII6

BL20(B)-40RFII6

WN 80(B)-63 M300 RF0F5RJ201=2

So80(B)-40 RFg)r0 SG Sch100RF=100-1ch4

wn50(b)-63ms=406

wn150(a)-100 m s2-6-95ch8RFF=320/516.5FS=6RF168F F-16R

WN 125(B)-16 RFF S

WN 300(B)-16 RF S=488

WN50-600 RF B=48RF50=

bL450(b)-10RF200-4.0K=107

WN80