NB/T 47021  法兰 C-RF 800-0.25/1.0FRF sch406

1 CRF 800-0.251.0FRF sch406

SO 4"-150 RF

3 RF 1800-1.6

PL60-10RFch7-FJ Sch40Sr�@RF@4 Rch440

pl600- 10 rf5-f671@В°F��– bl50

WN 10"-300 RF Sch40

WN 24"-150 RF Sch10S

DN80-Sch80 90EL

WN300B-25 FMSch80S106

WN100-300 RF B=1555-R@0