GB/T 12459  弯头 DN 80-690ES50 RF B

DN 80-6 90ES50 RF B

PL200(B)-10 RF(Bml

wn40(B)-2500 RF

PL 300(B)-16 RF-150

BL500(b)-10 rf

WN15-16RFF)-1

3 FM 900-2.5 δ0=12

PL 20(B)-10 RFï؟½

WN350-900Rj ARJ�

3 G 350-4.020ذ�000RGRF006mDF5 RJ RFS 90EL 45ELc=B-1.60-0FM6RF16-135Ш·ВЈШўВ