что формирование технологии бесшовной трубы квадратного сечения и ее приложения?

Wall thickness of БЕСШОВНЫЕ СТАЛЬНЫЕ ТРУБЫ is relatively thick, relatively small diameter thick. But the diameter is restricted, and its applications are limited, and production costs, especially for большой диаметр БЕСШОВНЫЕ СТАЛЬНЫЕ ТРУБЫ production costs are relatively high.

There are mainly three kinds of forming technology of seamless square tube: Горячекатаный, cold-drawn and welded. For the cold drawn square tube, the ability of withstanding localized concentrated load is weak, the welding process produced pipe welds are the weak link, do not apply to the construction of high-end residential buildings.

Стандарт: ASTM A500, ASTM A53, EN 10210 ,EN 10219 ,JIS G 3466 ,BS 1387, BS 6323 ,ЭТО : 1161,ЭТО : 3601,ЭТО : 3074 ЭТО : 4923, ДИН 1626, ДИН 2394.
Вне диаметр:10 *10мм – 500 * 500 мм
Толщина стенки: 0.5mm – 20mm
длина: 0.1 – 18 m as per customer’s request
Марка стали: ГБ: Q195, Q215, Q235, Q345
ASTM: GR A, GR B, GR C, GR D, DC01, DC03, 1008, 1010 JIS: SS330, SS440, SS490, SPHD, SPHE
EN BS: S185, S235, S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H
Конец: Квадратные, Burr removed
Поверхность: Слегка смазанный маслом, Горячее цинкование, Гальваническое покрытие, Черный
термическая обработка: Bright Annealed, Black Annealed

Standard Corner Radius(Mechanical Sizes:)

Currently, the domestic general uses cold drawn or welded tube production. While the foreign mainly uses hot rolling process, fully able to meet the requirements of high-end buildings. The high-end hot-rolled seamless square tube construction is with good bearing properties, good weldability, low production costs and high production efficiency.

прямолинейность
Mechanical Sizes: Макс. 1/16″ в 3 ноги
Structural Sizes: Макс. 1/8″ x Number of feet of total length divided by 5

Толщина стенки
механический & Structural Sizes: ± 10% от номинальной толщины стенки
Squareness of Sides
Mechanical Sizes: Макс: ± b = c x 0.006″
b = Tolerance for out-of-square
c = Largest external dimension across flats
Structural Sizes: Adjacent sides may deviate from 90 ° by ± 2 °

It is understood that the hot-rolled seamless square tube due to structural features of its own, effectively circumvent the connection between the column and beam welding defects and leading to performance degradation, can significantly improve the problem of low efficiency of the traditional low-rise concrete structure, large pollution, waste of resources and other issues; В то же время, the product is with such good performance as the uniform force, high dimensional accuracy, high strength and good impact resistance, can improve the seismic resistance of high-end architecture, will be widely used in steel high-rise buildings, airports and other construction, and has become the main support materials of the construction industry in the future, with great market prospects.