Hoop Iron is flattened iron in long thin strips. They are supplied in coils with either punched or un-punched nail holes.
The hoop iron has flat strapping of different thicknesses and can be galvanized or stainless steel. The sizes sold are as long as a 20kg roll with a 20mm width and 1mm in thickness
Hoop iron is used for attaching roofing to structures and can also be used to connect brickwork to columns.