Offshore structure - Import export

WDI Spannstahl and its subsidiary nedri Spanstaal B.V in Venlo, Netherlands, are among the most important manufacturers of prestressing steel in Europe.The company has a recognised high level of expertise in the field of prestressing steel production. Since its foundation in 1925, NEDRI Spanstaal BV has gained a respected position and excellent reputation in the field of prestressing steel technology in Europe and far beyond.This expertise is a guarantee of top quality and sustainability when using our products for infrastructure projects, for onshore and offshore structures as well as in precast concrete construction. Our dedicated and experienced employees are the foundation for the perfection of our products. NEDRI Spanstaal BV is certified by Lloyd's Register Quality Assurance in accordance with ISO 9001 - 2008 and is a member of ESIS: European Stress Information Service.

AMU - Abrasive Mixing Units higher 700 bar. The AMU series was standardised for various industrial application ranges. Amongst these are the decommissioning and maintenance of offshore structures and plant in the petrochemical and nuclear technology industries. Also special applications, in the wind power industry or for structural or civil engineering are not uncommon. The unit designation always refers to the maximum working pressure and the gross capacity of the pressure vessel. In combination with a conventional high-pressure pump, the various pressure levels and nozzle diameters can be individually adjusted to the task in hand. Our cutting devices and equipment help to control the cutting processes with our water jet cutting systems (AMU higher 700 bar) from a large distance.

For the abandonment of Offshore structures special legal requirements apply. Tubes have to be deconstructed under the seabed. This requires special technologies. Our Downhole Cutting Heads (DCHs) can be inserted into tubes and casings over an umbilical from the working platform. Arriving at the destination they clamp in the tubes and perform a 360 degrees cut which severs the tube underneath the seabed. The DCH is pulled out and afterwards the pulling of the tube is possible. Cuttings can be performed up to 150 m (500 ft) deep and pipe sizes between 7” and 72” diameter, whereby the wall thickness can be up to 20” thick. For every requirement we offer the appropriate DCH. By extensions nearly every kind of pipe/tubing/casing can be cut.