GB/T 12459  弯头 DN 80-3.0545EL0 FF Sch10SSch405

DN 80-3.05 45EL0 FF Sch10SSch405

WN 50-150 RF979769F4

SO 125-150 RFRF bchub

WN 6"-300 LFMFRF sch406rf3FS

WN80(B)-16 RF6252

WN12"-300 RF Sch40102 H24060

WN80(B)-16 RF773@RF@08ta10Schc0RF12F2@F9@RF689¬=101=7 RFh

bi 6353

EHA600RF S=24

WN15