Copper radiator core are usually used on heavy auto vehicles, the type have flat fin one and zigzag one,

The material of the copper tube is H68, thickness is 0. 11,

The fin material is H68, thickness is 0. 065-0. 068,

The strip material is H68, thickness is 0. 045-0. 05,

The tube we have 18. 5x2. 2, 14x2. 5, 14x2. 2,