Vacuum Pipe BN4 from CE48863 BN6/7 BT7 (Early) OP0200

Material: Copper Nickel

(Pipe may differ to image shown)

Cooper pipes are more traditional and easier to work with however Copper Nickel (aka CuNI, Kunifer, cupro-nickel or NiCopp) is more resistant to corrosion and has a higher fatigue strength.