Recently, by the Lanzhou public works machinery and Iger jointly developed technology limited liability company Chengdu rail joint grinding machine in the estuary south rail welding plant with two production lines in operation. Full road 13 this equipment for the first integrated rail welded rail joint grinding machine, the project received a national utility model patent and the Lanzhou railway Bureau of science and technology progress award.

The rapid development of high-speed rail straightness on CWR rail welding joint put forward higher requirements, and the quality of the welded joint of rail grinding directly affects its flatness. To improve the quality of Polish and efficiency, guarantee the smooth degree of welding rail joints to ensure traffic safety and train operation comfort, in early 2015, Lanzhou public works machinery set up a science and technology research group, targets to carry out rough grinding of welded joint equipment replacement projects research and technology development.

The equipment enclosed design and matching dust removal device, gas iron in favour of collecting Polish sales, not only improving the quality of working environment, but also reduces the harm to the human body, has a high use value.