Steel tubes for precision applications - technical delivery conditions - part 5 : welded and cold sized square and rectangular tubes 精密用途鋼管.交貨技術條件.第5部分:焊接冷定徑方形和矩形鋼管
Steel tubes for precision applications - technical delivery conditions - part 5 : welded and cold size square and rectangular tubes ; german version en 10305 - 5 : 2003 精密儀器用鋼管.交貨技術條件.第5部分:焊接冷精加工
Cold - formed rectangular tube - steel column for architecture structure is formed by roll cold - winding forming process and hf longitudinal seam weld 建筑結構用冷彎矩形鋼管是采用冷軋或熱軋鋼帶,經連續輥式冷彎及高頻直縫焊接生產形成的矩形鋼管。
Cold - formed rectangular tube - steel column have been developed in recent years and it will be wildly used in many engineering areas such as building , bridge and so on 冷彎矩形鋼管是我國近年來發展的一種結構用鋼,在建筑、橋梁等領域有著十分廣泛的應用前景。
Furthermore , we have several chair - manufacturing expertise , among which the curving technology of chair ' s vertical beams and the technology of punching holes in rectangular tubes have been granted patents by the state 擁有多項座椅制造的專有技術,其中座椅縱梁彎形工藝和矩形管沖孔工藝獲得國家專利。
Although cold - formed rectangular tube - steel column is favorable to industrialization of mass production , the cold forming process increase the yield point and tensile strength , at the same time the cold forming process decrease the ductile behavior , so it ’ s necessary to research the seismic behavior of cold - formed rectangular tube - steel column for architecture structure 冷彎矩形鋼管雖然可以實現大批量工廠化生產,但冷彎矩形鋼管在冷成型過程提高了材料的屈服點和抗拉強度同時降低了延性,因而冷彎矩形鋼管作為柱材在建筑結構抗震中的應用有待進一步研究。