GB/T 12459  弯头 DN 20-Sch40S90EL

DN 20-Sch40S 90EL

PL 80(B)-16 FF B=93 b=4

WN 1"-300 RF

WN150(B)-25RF S=5

PL 150(B)-6 RF

PL 80(B)-16 FF

SO 80-150 RFFFS=2

bi900/A 10000 M S=10/@10 s-2009PL 1000 f1=3 RF

wn80(b)-40m=b)-40rf300 RF Rfrff.6 RFF S��30Fn-1RFF221 cRFs=56r

47021 rf10