Void Forming Spiral Tubes

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GP Spira-VOID tubing has, on account of its special corrugations. A very high radial stiffness well adapted for use as void former in concrete structures. It is also being used as culverts and forms for concrete piles, plinths and columns. As void former GP Spira-VOID tubes are used to reduce the cross section area and thus the weight of the structure. The weight reduction will amount to approximately 40% and thus produce a favorable effect on foundation, wall and slab construction.