GB/T 12459  弯头 DN 65-Sch1090EL0aiFRFF

DN 65-Sch10 90EL0aiFRFF

so150(a)-40rfF fRFh50-25RF.080FM0 RFSch10SM6/0e

WN RF 20K 20A=3.1h63FRF=76/HG/T2FS=6=/ H=S0S3

PL 45(B)-40FM FFRFam@f

20592 WN50-40M r/09amp;amp FM1300-1.0am

3 FM500-1.0/50-112R

BL 600-300 RF=49 d=78pampamCA0

BL200-63Tc3)/(b

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