Direct rolling pass system. The direct rolling pass system refers to the pass system in which the two open legs of the I-beam pass are on the same side of the roll axis at the same time, and the waist is parallel to the roll axis.It is a potential rolled strip steel with rectangular section for general purpose. It is very common on construction sites. Its specifications are expressed in thickness and width. At present, most of the flat steel on the market are finished steel, which can be used ready-made for components, ladders, bridges and fences. Flat steel can also be used as blank for welding rigid steel and slab for laminated thin plate.St. John,Transformer tube: it is used to make transformer heat dissipation tube and other heat exchangers. It is made of general carbon steel. Flattening, flaring zigzag and hydraulic tests are required. Steel pipes are delivered in fixed length or double length, and there are certain requirements for the tortuosity of steel pipes.I-beam, also known as steel beam, is a long strip of steel with I-shaped section. I-beam is divided into ordinary I-beam and light I-beam. It is a section steel with I-type section shape.Akure,With the development of steel structure buildings, only I-beam is not enough, which is easy to lose stability for load-bearing columns.Alloy pipes can be used for heating (cooling) projects.→ under the same section load, the weight of hot-rolled H steel structure is reduced by % - % compared with the traditional structure.

GB No. I-beam is in height, in leg width and in waist thickness.The reinforced concrete surface reinforcement method has the advantages of simple construction technology and strong adaptability,St. JohnQ345B seamless pipe factory, which can greatly improve the bearing capacity, flexural stiffness and ductility of the brick wall. At the same time, its natural frequency can be changed to improve its performance in normal use. It is mainly applicable to the solid wall, porous hollow brick wall and mm thick empty bucket brick wall with no cracks and shear in the original wall. Small longitudinal crackInspection items,Classification introductionIt is widely used in various fields of national economic construction, bridges, power stations, oil drilling platforms, vehicles, highways, subways, steel structure plants and large warehousesWhen selecting I-beam in structural design, reasonable I-beam shall be selected according to its mechanical properties, chemical properties, weldability and structural size.

a. In the forming process,St. JohnHow much is 25 I-beam per ton, the thick steel plate has uniform deformation,St. JohnHow much is a 12cm I-beam per meter, small internal stress and no scratch on the surface. The alloy pipe produced and processed has higher coordination ability in the scope of size, specification and model of diameter and wall thickness, especially in the production and manufacturing of steel structure design grade thick wall pipe, especially medium diameter small thick wall pipe, which has incomparable advantages of other processing technologies and can meet a large number of customer regulations on the specification and model of alloy pipe.Inspection items,Key technical characteristics of alloy pipeWhat are the quality protection measures for galvanized pipe during weldingIts heat sealing effect is remarkable. It can be directly buried immediately, which can not only save resources, but also reduce consumption not occupy the natural environment, but also purify the environment. The transportation of gas can meet the requirements of long-distance transportation, meet the requirements of thermal insulation and cold protection, reduce heating equipment, unique and convenient installation, and reduce the construction cycle time of the project. On the whole, it is more convenient to use. It can also be used for the transportation of floor heating and hot springs.St. John,Whether I-section steel is ordinary or light, because the section size is relatively high and narrow, the moment of inertia of the two main axes of the section is quite different, so it can only be directly used for members bent in the plane of their web or form lattice stressed members. It is not suitable for axial compression members or members with bending perpendicular to the web plane, which makes it very limited in the scope of application. I-beam is widely used in buildings or other metal structures.Greatly reduce the environmental pollution caused by abrasion, damage and blanking, and increase the labor cost of material cleaning Cross rolling pass system. This pass system refers to that the two open legs of the I-beam pass are not on the same side of the waist at the same time, and the waist has an included angle with the horizontal axis.