GB/T 12459  弯头 DN 25-Sch4090ES/120

DN 25-Sch40 90ES/120

SO 15-600 GFFNPT)F

BI 1500R¬/data0S..��fS3 RC2/u0c3/unfCFR

PL 300(B)-10 RF=7

PL 25(B)-16 RFFFSch40Sat�6 RF5n-console/github

WN400-300 T404140-150 RF Schh80s5�77.5 RJf

WN80(A)-1500RF50 Rh8RC2

WN 300-900 RF S=4

WN500A-40RF