Sandvik DL210 is a compact and flexible longhole drill rig engineered for production drilling in narrow-vein underground mines. Designed for vertical and inclined plane rings and fans, it is capable of drilling holes with a diameter of 51 to 64 mm up to a depth of 20 meters.
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GIRON offers both versions to suit your applications and problems. In both cases, the product flows over a totally smooth surface made possible by the succession of wires. The space between each profile creates a gap, known as an interstice, fissure or slot.
In the welded versionThe wire is manufactured by rolling from round wire. Rolling is the most common process, generating a profile with slightly rounded edges. These profiles are then welded to perpendicularly positioned cross-members.
In the curly versionThe trapezoidal wire was stamped from round wire. GIRON’s contoured fissure grids have been developed for over 50 years. Stamping produces protruding edges for high drainage efficiency. These profiles are then assembled on rounds. At GIRON, the steel round is 7 mm in diameter and the loops have a pitch of 70 mm.
This technique guarantees opening accuracy unsurpassed gap widths, especially for very fine cracks. Grids can be supplied flat or curved, bare or with all types of reinforcement such as flats, angles or other accessories.
These screens consist of a welded mesh of steel bars. The upper surface, in contact with the product to be screened, is always installed parallel to the direction of material flow.
When sand and gravel are quarried, there are often impurities such as loam, clay, wood or coal. For this reason, a combination of cleaning and separating processes are implemented at an early stage to gain precious raw materials.
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