NB/T 47022  法兰 C-RF 700-1.0/6

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lf/se100-300 RF

DN20-PN40 SW RF Ⅱ

PL12b-16RFn RF S1

2 RF 1300-1.0 δ1=8

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SO 600(B)-40RFG10-rf=80RF=6F4010SS=8 B=R500-

WN RF 10K 250A Sch

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WN358B-16RFRF150 RF R680=0RFam@F.5 R7.5