HG/T 20592  法兰 WN 500-63 RFFF��XFRF6B)5F&@

WN 500-63RFFF��XFRF6B)5F&@

wn40-40 fm s=5

SO 80-300 RFhY

HG/T20615 WN 100-2500 RJ B=90 A=130

hc/@bl100-150 rf

PL150(A)-16 RF D=275 f1=3 b=3

wn1400(b)-10 rf s=0/5s=16

wn700-16ff60et/i=12wn400-600r= FF5

47023 rf1100-6.4 ลآƒà¸¢آ†à

WN25