GB/T 12459  弯头 DN 25-Ⅱ-4.590EL

DN25Ⅱ-4.5-90EL

47023 rf2100-1.0F00-180RF-

WN15-25 RF S=4.78 d

WN450B-25G/u00ac2500-1=50 RF300.2 b

WN250-2500RF SCH40

wn40-300rf0-FSR1=4.5RF20g0 RFLrvleS

47023 FM1600-1.6 86-

WN150(B)-16 FM

47023 RF2200-1.6ch401.0.6ru-0.6S50.65B)-1æB=598=

WN20-63g/