| http://www.w3.org/ns/prov#value | - As shown in FIG. 7, such projections can also be embodied on rectangular hollowprofiled sections 26 for simplifying the fastening of rods on nodes.In the process the hollow profiled sections can be made of a single material, for example steel or a light metal alloy, however, depending on the method of use it is also possible to shape laminated material, also plastic-layered or coated tubes,dependi
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