Was ist die Umformtechnologie für nahtlose Vierkantrohre und ihre Anwendungen??

Wall thickness of NAHTLOSE STAHLROHRE is relatively thick, relativ kleiner Durchmesser dick. Aber der Durchmesser ist begrenzt, und seine Anwendungen sind begrenzt, und Produktionskosten, especially for Große Durchmesser NAHTLOSE STAHLROHRE production costs are relatively high.

Es gibt hauptsächlich drei Arten von Umformtechnologien für nahtlose Vierkantrohre: warmgewalzt, kaltgezogen und geschweißt. 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.

Standard: ASTM A500, ASTM A53, De 10210 ,De 10219 ,ER G 3466 ,BS 1387, BS 6323 ,IS : 1161,IS : 3601,IS : 3074 IS : 4923, DIN 1626, DIN 2394.
Außendurchmesser:10 *10mm – 500 * 500 mm
Wandstärke: 0.5mm – 20mm
Länge: 0.1 – 18 m as per customer’s request
Edelstahl: GB: 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
Ende: Quadratischer Schnitt, Burr removed
Oberfläche: leicht geölte, Feuerverzinkt, Elektrisch galvanisiert, Schwarz
Wärmebehandlung: 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.

Geradheit
Mechanical Sizes: max. 1/16″ in 3 Fuß
Structural Sizes: max. 1/8″ x Number of feet of total length divided by 5

Wandstärke
Mechanische & Structural Sizes: ± 10% von Nennwanddicke
Squareness of Sides
Mechanical Sizes: max: ± 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; Gleichzeitig, 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.