NB/T 47065.1  支座 BⅠ 5070WR4Class272@RF@@ch4SS500 RF Sch40S-B)-6 RFc2@RF@00 RF S=519

BI 5070WR4Class272@RF@@ch4SS500 RF Sch40S-B)-6 RFc2@RF@00 RF S=519

wn20(b)-16 ff5

BI 6624RF S=180 RJ0FM@40

1 RF 500-0.6

WN 1"-1500 RF Sch80Sfmbt SC

LWN 1 1/2"-300 RF B=XXS

BL300-6 RF42780h80sF9.55RF°F1Ff@40-2.S@SOJBnrf6vbRF@RF

WN80(B)-16 R