GB/T 12459  弯头 DN 300-Ⅱ-390EL

WN50(A)-160 RJ900 RFampamp4500Sch160608RF S=0fm6ht100(B)-1 S=2/ch80S0S19119sc-=6656 RF&&ampa1

DN 300-Ⅱ-3 90EL

bi500-f/00

lwn150-600 rf/6RF8

WN 80(B)-16 RF S=8

WN 350(B)-25 T S=1

3 FM 1200-1.0 δ0=12

B WN700-150 RF B=676

WN65-25fm

pl200a-16 rf0S0