I-beam: national standard * what is the wall thickness of I-beamThe specification of I-beam is expressed in cm of waist width. For example,ArtemisaSpiral welded pipe wholesale, the waist width of No. I-beam is cm. The types of I-beam include hot-rolled ordinary I-beam Light I-beam and wide parallel leg I-beam (H-beam). The waist width of hot-rolled ordinary I-beam in China is ~ mm, expressed as No. ~ No., and the inclination of inner side wall of leg is : The pass system of rolled I-beam includes direct rolling pass system, cross rolling pass system and mixed pass system. In addition, I-beam can also adopt special rolling method.Artemisa, Tungsten; can improve the red hardness and thermal strength of steel and can improve the wear resistance of steel Judged as failing.Tsiroanomandidy,As shown in the name, I-beam is an I-shaped section steel. The inner surface of the upper and lower flanges has an inclination, generally :, which makes the outer flange thin and the inner flange thick. Therefore, the section characteristics of I-beam in the two main planes are very different, and it is difficult to give full play to the strength characteristics in application. Although the thickened I-beam has also appeared in the I-beam market the structure of the I-beam has determined its torsional performance.The shape of I-beam is similar to that of H-beam. What is the difference between them?With the development of steel structure buildings, only I-beam is not enough, that is, thickened I-beam,ArtemisaAlloy20 alloy pipe, which is easy to lose stability for load-bearing columns.

I-beam is divided into ordinary I-beam and light I-beam. The specification of hot rolled ordinary I-beam is -#. The specification of hot-rolled flexible I-beam supplied through agreement between the supplier and the buyer is -#. I-beam is mainly used in building structure, vehicle manufacturing, other industrial structures and fixed panels and cabinets. I-beam is often used together with I-beam.Steel pipes can be classified by their models:I-beam is widely used in buildings or other metal structures.equipment maintenance , Judged as failing. The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge.Under the action of thermal stress, because the initial temperature of the surface layer is lower than that of the heart and the shrinkage is greater than that of the heart,Artemisa15CrMoG high pressure alloy pipe, the heart is pulled. At the end of cooling, because the final cooling volume shrinkage of the heart cannot be carried out freely, under the action of thermal stress, the surface of the workpiece is finally compressed and the center is pulled. This phenomenon is affected by factors such as cooling rate, material composition and heat treatment process. The faster the cooling rate, the higher the carbon content and alloy composition, the greater the uneven plastic deformation caused by thermal stress during cooling, and the greater the final residual stress. On the other hand, due to the change of microstructure during heat treatment, i.e. the transformation from austenite to martensite, the increase of specific volume will be accompanied by the expansion of workpiece volume, and each part of workpiece will undergo phase transformation successively, which is just opposite to the thermal stress. The microstructure stress is related to the cooling rate, shape and chemical composition of the workpiece in the martensitic transformation zone.

Plan scheme : for high carbon steel with carbon content of more than .% and high chromium alloy pipe with chromium content of no less than %, the interval is min.Latest consultation,When selecting I-beam in structural design, reasonable I-beam shall be selected according to its mechanical properties, chemical properties, weldability and structural size. If the surface of the welded pipe is rusty, we can polish the appearance of the welded pipe with a wire brush to prevent rust. Small longitudinal crackArtemisa,Classification introductionWhen selecting I-beam in structural design reasonable I-beam shall be selected according to its mechanical properties, chemical properties, weldability and structural size.I-beam, can only be directly used for bending members or lattice members on its Web because of its large and narrow section size and large moment of inertia difference between the two main axes on the section. It is not suitable for axial compression members and flexural members perpendicular to the web plane, so its application range is very limited. I-beams are widely used in buildings and other metal structures.