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Information × Registration Number 0308U003303, 0106U008925 , R & D reports Title Investigation of causes of formation of defects on the surface of hot extrusion tubes produced at "VTZ" JSC and elimination of such causes popup.stage_title Дослідження та усунення причин утворення дефектів на поверхні гарячепресованих труб виробництва ВАТ "ВТЗ" Head Oprishko L.V., Registration Date 21-03-2008 Organization State Scientific Research Tube Institute popup.description2 The infiuence of the technological factors of the formation of ID surface defects in thick-walled boiler tubes has been investigated for the tubes produced at the 55MN press line of VTZ JSC. Characteristic defect features have been revealed and classified. The causes of the defect formation have been established and measures for their elimination have been developed Product Description popup.authors popup.nrat_date 2020-04-02 Close