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Information × Registration Number 0305U003285, 0105U002525 , R & D reports Title Investigation of defects and the causes of their appearance at the inside surface of 325х8,0; 325х10,0 мм tubes of 20 steel grade and 323х9,5 мм tubes of"D" steel grade manufactured by Nikopol Tube Company JSC popup.stage_title Дослідження дефектів та причин їх утворення на внутрішній поверхні труб розмірами 325х8,0; 325х10,0 мм із сталі 20 та 323х9,5 мм із сталі Д, виготовлених ЗАТ "Нікопольська трубна компанія" Head Oprishko L.V., Registration Date 09-03-2005 Organization Ya.Ye.Osada State Scientific Research Tube Institute popup.description2 Examination has been carried out to establish defect causes at the inside surface of tubes made of 20 and D steel grades at NTK JSC. It was esteblished that defects are of steel making origin caused by axial crumbliness of the tube billets that is not permitted by GOST 3-009-20005635 Product Description popup.authors popup.nrat_date 2020-04-02 Close