Changzhou LST tubesheet Machinery Co., Ltd. successfully complete customization foreign customers 300,000 kilowatts of nuclear power steam generator tube sheet hole machining, the aperture 100 percent qualified, pitch, hole verticality, the hole wall roughness and other indicators fully meet the steam generator deep hole machining is the manufacturing requirements of the production of nuclear power projects most difficult to overcome a storm in the last few months of the research process, adjust device parameters, configure the secondary tooling, and explore the process parameters, the process to finalize the drilling program, smoothly completed a large tube sheet hole machining tasks ----2017.03.17