Metal carpentry: is the set of steel works intended for the construction of any metal construction job or project, with structural steel and not, which are used to create load-bearing structures in various areas. They are finished metal products, which are made using machinery for cutting, bending, drilling and welding.

Wooden Carpentry: It is the art and trade of cutting, working, and joining timber. The term includes both structural timberwork in framing and items such as doors, windows, and staircases. Timber components for construction, installing them on roofs, walls, floors or other timber-framed structures. They construct skirting boards, doors etc.