GB/T 12459  弯头 DN 300-1090ELF405 RFJ-6 Sch4SF

DN 300-10 90ELF405 RFJ-6 Sch4SF

WN 10(A)-160 RF S=36FHG-1.02=30 RF

WN80-300 RFRF2RF Sch/-40RF

WN50-16 RF AA=60o

BI 356RFB)-16 RF RF Sch40S50m1ch60�3/0)4-1

470221 t 1000-0.6pa

WN40(B)-63RFHG/T20FM0=6

pl100(b)-16 rf hg/t205920

WN50-300 fm Sch40

pl10