HG/T 20592  法兰盖 BL 800-40 RFcR

20592 BL800-40RFcR

1 RF 450-1.0 δs=5

WN 80-100 RFch40SRF 12

PL 250(B)-16 RF

pL100(b)-10RF RF8-200950s/0a

2 g700-1c�ذ¨

PL200(B)-16 RF b=3

WN 250(B)-25 RF

1 FM 700-1.0 δs=5

SW 40-600 RFF0080/u00a27s RERFRJsRF@F SRRSch80S160RJ-R0h80b)J08= RF��