HG/T 20592  法兰盖 BL 20-100 G-20�¦-1f s=2

BL20-100G-20�¦-1f s=2

SO 250-150 FFaп▒Б■─Б▄═п╠Б∙≥п▒Б■─Б√═я├Б∙║п▒Б■─Б▄═п╠Б∙≥п▒Б■

47021 FM 900-1.0/84.5-6RFS

wn250-40 rf s=7c

BL500-10RF f1=2.5RF S=120@t.5 RJ3504�-Sc150 RF RF0

B