GB/T 12459  弯头 DN 20-3.290EL

DN 20-3.2 90EL

PL 150(B)-10 RF-300 FF Sch14F-R�5 RJ FM5 R7.5

BⅡ1900-s80-320 rfch

WN350A-150RF-20

pl25-2.5rf L

SO350(B)-600g

PL60-6RF9FS-RF�pampRF@15 c=16à¸

WN 25(B)-16RF s=321=1 r.445=5.71.0 n=-29109I 110gRR

WN32A-10RFF00-

WN1100-25RF/ RF)4�