... making rotor field pole coil of hydrogenerato. Item Copper bar ,copper rod ,Brass bar,brass rod Material T2,T1,TP2,TP1,TU2,C1011,C1200 ... ,etcDiameter 3mm~800mmLength 5.8m,6m,or as requiredApplication Copper bar is widely used in boat building, War industry, Car industry ...