HG/T 20592  法兰盖 BL 150-6 FFB0rf.34-

BL150-6 FFB0rf.34-

WN 300-150 RF L40S=7=68 S317hP10- WN2094.1 RF5N

pl25(a)-40rf8005616 FFc5811=3f h1510F=26m6

WN15-150 RF S=/M1500-1

WN250-63G04F6 RFK

wn25(b)-25 rf s=5.5

2 A1500 RF47023 FM850-1.6/9-)-16

DN 400-Sch80 C-1.616R=12 S

BL25-63 RF R

BL90