GB/T 12459  弯头 DN 50-Ⅱ-390EL0-300 r

DN 50-Ⅱ-3 90EL0-300 r

3 RF 700-1.0 δ0=10

WN 50(B)-16 RF S0CH0srcsrc(b)-1525 bFf1.a

WN 80-300RF28/ S16rf102-129 RJ1 L

PL250-40 RFchaibo.jpgmpampamp

WN300-300 RF Sch40sFF/(A)-16

bwn1400-150rf s=12

WN400-300 RfSch/آ°PL200(/00 RF

WN65-300RF0Mm0S17/d