Sandvik DD311 is available in three different versions, including DD311D and DD311DE. It is a medium size, single-boom jumbo designed for fast and accurate drilling within drifting and tunneling of 40 m² sections.
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These sheets are made from solid sheet metal. The holes (meshes) are then produced by material removal processes such as perforation, punching, flame cutting, laser cutting, plasma cutting or waterjet cutting.
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