For each size, all standardised components and assemblies, such as straight and curved track sections, track switches, turntables, drop sections, etc., have the same uniform joint dimensions. Self-centering plug-in, bolted connections allow them to be easily assembled in any combination. Different profile section sizes can be used for single and double-girder suspension crane runways and girders. All components are either galvanised or finished with a coat of synthetic resinbased paint or powder-coated. Straight and curved sections Straight and curved sections are made of special cold-rolled profiles which feature high rigidity and stability for a low deadweight. The profile sections for loads up to 2,000 kg are hollow track sections with protected insiderunning surfaces. The KBK III profile of outside-running section design is available for loads up to 3,200 kg. KBK II and KBK III profile sections can also be supplied with integrated conductor lines.