Duple Metsec was a bus bodywork builder based in West Midlands of England in the United Kingdom. It usually supplied body kits for bus assembly overseas. It was originated from the bus body manufacturing business of Metal Sections, known as TI Metsec in the late 1970s, the present day Voestalpine Metsec plc. Metal Sections, as the name suggests, produced prefabricated sections of metal for customers for a variety of products. In the early days, Metal Sections was not involved in the bus body business, however, after supplying framing sections for other bus body builders, they decided to get into the business themselves.