Aluminum Formwork | 6061-T6 Wall and Slab Panel System System Overview Aluminum formwork is a cast-in-place forming system built from extruded 6061-T6 panels that are locked together with pin and wedge joints to create wall, slab, beam, and staircase moulds for single-floor construction. Designed for buildings with repeating layouts such as residential towers, serviced apartments, hotels, and hospital blocks, this system enables efficient construction where the same footprint