... is integrated material, copper and aluminum can’t be separated, and it can be bended, expanded, and flared ... are same as copper tube, the length can reach 1500m.Testing report of RF cable which use the ... metal tube.According to the signal attenuation and RL testing, its performance index is not lower than copper ... 1,Comparing to copper tube, using Bi-metal tube can save about 30% ~ 40% purchasing cost.2, ...