The flexible track system consists of single track / single beam track and double beam track. KBK track is widely used in various automatic transmission lines, especially in the automobile manufacturing plant, high quality product suppliers, KBK is regarded as the required equipment of rail. KBK is also called the standard straight rail track, mainly uses multiple docking into linear monorail transportation line, can also be multi segment docking installation into two parallel straight track for flexible suspension crane cart do orbit, KBK rail can also be a standard or two standard parallel form flexible suspension crane girder. The KBK track has the advantages of large strength, good rigidity, light weight and strong adaptability. The KBK track system can be operated manually and automatically and semi automatically, so as to meet all kinds of process layout requirements.