HG/T 20592  法兰 WN 80(B)-16 RF-15

WN80(B)-16 RF-15

BL 40-150 RF

BL 250-63 M

SP-6 SB)RFt20593

PL 25(B)-16 RF

PL200(B)-16 RF b=3

WN 350-600 RF20H40S16-4

WN 50(B)-16 RF-150 RFsch40FFRFam@FS-

BL 40-300 RF

WN 20(B)-63 RF S=3mp50 RF SchmS1=4109mRF4data5 RJ RF RF ScR80f srf@40@S5@4 Rch44060