Sif Holding NV manufactures large steel tubulars, which are used as foundation components for the offshore energy markets. It primarily produces monopiles, transition pieces and piles that are used to anchor jacket foundations in the seabed for offshore wind turbines. It furthermore produces legs, pile sleeves and piles of the larger jackets and tubular structures for various uses such as jetties. The firm operates through the following segments: Wind, Marshalling and Other. The Wind segment produces and delivers monopiles, transition pieces or other foundation components for the off-shore wind industry. The Marshalling segment includes renting-out of logistical area and facilities and the delivery of logistical services to customers, mainly in the off-shore wind industry. The company was founded on June 4, 1974 and is headquartered in Roermond, the Netherlands.