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Information × Registration Number 0310U008083, 0109U005279 , R & D reports Title Working out and approving changes in interstate standards GOST 8639-82 "Square steel tubes.Size range", and GOST 13663-86 " Shaped steel tubes. Specifications". popup.stage_title Розробка та затвердження змін до міждержавних стандартів ГОСТ 8639-82 "Трубы стальные квадратные. Сортамент " і ГОСТ 13663-86 " Трубы стальные профильные. Технические требования". Head Vorona Vitalij Mykhailovych, Registration Date 13-10-2010 Organization State Scientific Research Tube Institute popup.description2 Two changes in interstate standards on the delivery of new types of shaped tubes made by butt welding and hot sizing of round electric welded tubes have been worked out and product range and chemical composition of steel grades have been expanded. Product Description popup.authors Кобякова Тетяна Михайлівна popup.nrat_date 2020-04-02 Close