HG/T 20592  法兰盖 BL 80(B)-16 RF d/B)

bl80(b)-16 rf d/B)

wn100-150 rf รฃ55(b

wn40-300rf-s/41.0/R

BL 250-16 RFammpaГўвӮ¬RF db1=352.225FMh=230

wn20(b)-25 m=23S=4TC80Ž-1

SO 32-150 RFF/09010R

pl80(b)-16rfb=3f1=0-13am80SF10.40-1c6

SO 250(B)-25 FM b=0

2 M 1800-1.0

SO20-40Gh40R��â€