GB/T 12459  弯头 DN 500-Ⅱ-9.5390EL*410700RFB)-

DN 500-Ⅱ-9.53 90EL*410700RFB)-

47023-fm 1100-6.4540 S K=768 B1=663 RF1000-1

LWN 200-300 RF B=4.5

WN 300(B)-16 FM S=6010PLS=JF Sc S=816 RF Sch1

SO200-150 RF0S/-160

WN50(B)-63 M S=4ch800-0.25/36FF f)-

wn100(b)-150rf sch40s so80(b)-16 RF�

PL 350(B)-