GB/T 12459  异径三通 DN 550×550×20-Sch100TRF50rf/T2F

DN 20×20×550-Sch100 TRF50rf/T2F

bl25- 16rf5(B)-6 RFF154.5S 80S538 S61FF¬Â¢Ãch4

wn50-150rfMS S1�

BL400-10 RF-10c0 RF=0=6RF RFRF

WN50-150 FF 5.1c

WN 80-300 RF .6/ RF S=1050-8-1.6-1

WN25(B)-16 RF/3Ru004 SFM5/115-0.10620 rfF RF 304.30f c=30

ABL