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Information × Registration Number 0308U008446, 0108U003724 , R & D reports Title Studying a possibility of cutting the volume of testing mechanical properties in processing and microstructure in hot-worked boiler 114 mm diameter tubes of Steel 20 produced to specifiocation TU 14-3-460 at DTZ JSC popup.stage_title Дослідження можливості зменшення обсягів випробувань механічних, технологічних властивостей та мікроструктури гарячедеформованих котельних труб зі сталі 20 діаметром 114 мм та більше виробництва ВАТ "ДТЗ" за ТУ 14-3-460 Head Oprisko Liudmyla Vasylivna, Registration Date 13-01-2009 Organization Ya. Ye. Osada State Scientific Research Tube Institute popup.description2 Statistical data of testing mechanical and technological properties and microstructure control of 114 mm and higher diameter tubes produced at DTZ JSC according to specification TU 14-3-460 have been analysed. A lot of tubes of steel grade "20" has been manufactured and mechanical properties and microstructure correspondence to TU 14-3-460 have been checked. Impact bending test data have been obtained. Results of mechanical property and microstructure examination meet requirements of TU 14-3-460. Permission of cutting down by 20% the volume of impact bend tests has been given to DTZ JSC. The same concerns microstructure examination for 144 mm and higher diameter tubes of steel "20" produced by TU 14-3-460. Product Description popup.authors popup.nrat_date 2020-04-02 Close