HG/T 20592  法兰 PL 25-40 RF8005616 FFc5811=3f h1510F=26m6

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

BL900-10RF M.0/1

47021 C-M900-0.640mntem5F55mo15/

1 RF 1400-0.25 δs=10