NB/T 47021  法兰 FM 550-1.6FM400-1.

47021 fm550-1.6/-FM400-1.

PL500-2.5RF5RFb)-2 rf SFM SJ Sch80S��G Sch80S� RF0 R0

1 RF 800-0.6/u00c3/u00a8/u00e2/u0080/u009eo10050R0SS25 g

LWN20-150 RF 深Fpampam�0-165FF150 rf�1

WN50-300 G S=0s40S/�aa0

WN32(B)-40MS=3.5

SO 32(B)-6 RF�0-1.