Headers, manifolds and brazed assemblies can be produced in a wide range of tube sizes ranging from 1/4" (0.250) OD to 3-1/8" (3.125) OD. Tube ends can be spun closed on tubes 1/4" (0.250) OD to 1-5/8" (1.625) OD. Holes on these parts can be punched or drilled and the tube collars can be extruded or intruded. Assemblies can also include brazed fittings or flared fittings based on our customer's unique requirements. Most brazed assemblies and headers are made out of copper but manifolds can also be made out of aluminum, stainless steel, copper-nickel, steel, nickel and brass.