{"id":19867,"date":"2025-12-26T11:33:29","date_gmt":"2025-12-26T10:33:29","guid":{"rendered":"https:\/\/www.darda.de\/?page_id=19867"},"modified":"2025-12-26T11:33:29","modified_gmt":"2025-12-26T10:33:29","slug":"steel-sheet","status":"publish","type":"page","link":"https:\/\/www.darda.de\/en\/knowledge\/steel-sheet","title":{"rendered":"Steel sheet"},"content":{"rendered":"
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Steel sheet is a central flat product in building construction, plant and vessel engineering, and deconstruction. From trapezoidal sheet roofs and fa\u00e7ade claddings to tanks and silos: the properties and workability of steel sheet determine planning, assembly, and dismantling. In practical deconstruction, professionals often encounter steel sheet in composite structures with concrete, in confined interior areas, and in safety-critical environments\u2014this is where versatile hydraulic steel shears<\/a>, tank cutters<\/em>, combination shears<\/em> and Multi Cutters<\/em> as well as powerful mobile hydraulic power units<\/a> are used. Where steel sheet is part of concrete components, concrete pulverizers<\/em> enable controlled exposure, while for massive components or surrounding rock, hydraulic splitters<\/em> contribute to cross-section reduction.<\/p>\n

Definition: What is meant by steel sheet<\/h2>\n

Steel sheet refers to rolled flat steel products with a small thickness relative to their surface area, supplied as sheets or coils. A common distinction is thin sheet (typically up to about 3 mm) and heavy plate (above that). Depending on the production route, a distinction is made between hot-rolled and cold-rolled sheet; there are also refined variants with metallic coatings (e.g., zinc) or organic coatings. Important parameters include yield strength, tensile strength, elongation at break, and toughness, complemented by surface quality, flatness, and thickness tolerances. Application and processing methods in deconstruction are largely determined by sheet thickness, steel grade, coating, and existing joining techniques (weld seams, seams, riveted and bolted connections).<\/p>\n

Properties, formats, and surfaces of steel sheet<\/h2>\n

Steel sheet is supplied as sheet or coil and covers a wide range from non-alloy structural steels to higher-strength fine-grain steels. Cold-rolled grades offer precise surfaces and tight tolerances, while hot-rolled grades cover larger thickness ranges and often provide economic advantages. Surfaces can be untreated, hot-dip galvanized, electrolytically galvanized, alu-zinc coated, or organically coated. For slip-resistant requirements, embossed surfaces such as checker or tear plate are used. These variations influence corrosion protection, processing, emissions behavior during cutting, and the selection of suitable tools.<\/p>\n

Steel sheet in construction, plant engineering, and deconstruction<\/h2>\n

In building construction, steel sheet is used as trapezoidal sheet in composite slabs, for roof and wall profiles, as fire protection cladding, in elevator shafts, air ducts, cable ducts, enclosures, and as lost formwork. In industry, tanks, vessels, pipelines, furnace claddings, and machine covers are typical applications. In deconstruction and during the strip-out, steel sheets often act as an outer shell, as a vessel jacket, or as a composite partner of concrete. Accordingly, cutting, shearing, and controlled exposure are the key work steps.<\/p>\n

Deconstruction of tanks and vessels<\/h3>\n

Steel sheet jackets of tanks, silos, and pipelines are usually cold cut to avoid sparks and heat-affected zones. Tank cutters<\/strong> enable track and ring cuts on curved jacket surfaces, steel shears<\/em> and combination shears<\/em> segment sheet sections, flanges, and stiffening rings. With painted or galvanized sheets, mechanical methods reduce emissions compared to thermal cutting methods\u2014particularly in sensitive areas of building gutting and cutting<\/em> as well as in special demolition<\/em>. The drive power is provided by a suitable hydraulic power pack<\/strong>.<\/p>\n

Strip-out and cutting in existing buildings<\/h3>\n

Indoors, steel sheets occur on air ducts, fa\u00e7ade panels, trapezoidal sheet roofs, cable trays, and machine enclosures. Multi Cutters<\/em> are suitable for changing cross-sections, steel shears<\/em> for efficient straight and contour cuts. Thanks to compact designs and adaptable blade geometries, components can be dismantled with minimal spark generation\u2014an advantage in building gutting and cutting<\/strong> during ongoing building operations.<\/p>\n

Concrete demolition with steel sheet components<\/h3>\n

In composite slabs with trapezoidal sheet or with lost formwork, steel sheet<\/strong> is directly bonded to concrete. Concrete pulverizers<\/em> separate and crush the concrete in a controlled manner so that the trapezoidal sheet can be exposed and then cut off with steel shears<\/em> or combination shears<\/em>. This sequence supports low-emission concrete demolition and special demolition<\/strong> with clean separation by material type.<\/p>\n

Rock excavation and tunnel construction<\/h3>\n

In tunnel tubes and adits, professionals encounter steel sheet as lining, cladding of ventilation systems, or in auxiliary structures. Often, the steel sheet cladding must first be loosened or cut before the in-situ rock or concrete encasement is processed with hydraulic splitters<\/em> or rock wedge splitters<\/em>. The coordinated sequence prevents uncontrolled deformation of sheets and facilitates safe dismantling.<\/p>\n

Cutting and processing methods for steel sheet in deconstruction<\/h2>\n

The choice of method depends on material thickness, strength, coating, accessibility, and safety requirements. Mechanical cutting methods are often the first choice in deconstruction because they do not use flame and minimize the heat-affected zone.<\/p>\n

Mechanical cutting<\/h3>\n