GB/T 12459  偏心异径管 DN 50×25-Ⅱ-3RE0 RE469p10 RF0FSCH4RF SCH40RF@40F@.5 RJ.6FM92-600 RFRF@40F@

DN 50×25-Ⅱ-3 RE0 RE469p10 RF0FSCH4RF SCH40RF@40F@.5 RJ.6FM92-600 RFRF@40F@

WN 100(b)-40 RF S=5

WN 100(B)-40 RF S=8.56 A=1

WN100-16RF0RJ@0 rf6/6onFr19n S=S80rf/S=1

bi 2801

WN80(B)-16 RF43928

WN 4"-150 RF Sch5702

WN250-300RF SCH8/3/ S170-40SF

1