HG/T 20592  法兰盖 BL 800-6 RF

bl800-6rf

bl100-150 rf я▐Б■▄п╠Б┬≥п©Б■╛я▐Б■▄п╠Б√═п╠�

WN50-16FF

BI 1000ch40-0/1 s=40283000(50)-6r0u RF S=7.116=1

LWN450-150RF/40b62-1989B=8uRFc3/RF350.6/52-1

lwn 100-300 rf.0/

WN50-600RF B R /30/s+14 RF/1015)