6 Metal reinforcements for concrete, namely, metal structural supports, metal gratings; [ laminated structural steel mats and forming elements, namely, steel mats covered by a thermoplastic foil for building purposes; ] shuttering parts of metal for building purposes, namely, shutterings of expanded metal reinforced by steel bars; shuttering and formwork components, namely, pre-fabricated wire mesh elements, namely, braces and supports; shuttering parts, predominantly of metal, for building purposes; building materials, namely, permeable metal plates as semi-finished shuttering components, connected to metal grates; building materials of metal for reinforced concrete and masonry construction, namely, spacers, distance pieces for reinforcements, connecting pieces, namely, adapter sleeves for structural steels and connecting sleeves for crimp pins or keyed joints of structural steels, air space anchors [, wall cramps for facades or for insulating material; reinforcement crossings, namely, prefabricated construction kits of reinforcing steel for angular wall crossings consisting of metal; prefabricated reinforcements for concrete construction, namely, in particular, those for corners of concrete walls and ceilings; wall crossing metal rails; metal anchorages; metal screw crossings; metal facade plate anchors; metal breast-wall plate anchors; auxiliary building materials of metal, namely, shuttering tubes for concrete construction; concrete lining elements, namely, braces and supports of metal; bearing and separating elements, namely, braces and supports for reinforcing steels or reinforcing steel elements; metal reinforcing bars, metal reinforcing elements, namely, braces and supports; shearing force mandrels and sleeves, anchoring elements, namely, dowels and anchors; building materials of metal, namely, composite materials for use in the building industry, namely, composite panels composed primarily of metal; composite materials for insulation and sound insulation; pre-fabricated connection systems for cantilevered structural members designed to avoid thermo bridging; pre-fabricated rebar connecting braces and supports for use in reinforced concrete construction, staircase crossing braces and supports, expansion joint elements, namely, dowels, braces and supports; adapter for connection of tubes with different diameter, namely, adapters of metal for use as pipe connection pieces; metal pipe couplings; metal building materials, namely, reinforcing cages, metal building materials, namely, reinforcing netting, metal building materials, namely, reinforcing mats, tie bars, metal building materials, namely, compressional bars and other tension or pressure braces and supports of metal for connecting two concrete elements; metal building materials, namely, punching reinforcements; adapter and compensating rings for connection of tubes of metal; termination couplings for tubes of metal; wire rope fittings of metal, namely, sockets; pipe couplings of metal; all aforementioned products of metal and if included in this class ]