Characteristics and applications of various steel profiles

The characteristics of various types of steel and application knowledge popularization

Steel Bearing Plate

Also known as steel bearing plate, building compression steel plate, galvanized steel by roll pressure cold bending molding, its cross-section into a V-shaped, U-shaped, trapezoidal or similar to these shapes of the wave, mainly used as a permanent formwork, but also can be selected for other purposes.

In the use stage, the floor bearing plate as a concrete floor slab tensile reinforcement, but also improve the rigidity of the floor, saving the amount of steel and concrete.

The embossing on the surface of the compression plate maximizes the bonding force between the floor joist and the concrete, making the two form a whole, and with stiffening ribs, the floor joist system has a high load-bearing capacity.

Pressure steel plate combination plate (floor bearing plate, steel bearing plate) is a very reasonable structural form, it can according to the location and characteristics of its components, give full play to the advantages of steel tensile and concrete compressive properties, and has good seismic performance, construction performance. This structure is now widely used in domestic and foreign multi-high-rise buildings.

I-beam

Called steel beams, is a long strip of steel with an I-shaped cross-section. Its specifications to waist height (h) * leg width (b) * waist thickness (d) of the number of millimeters, such as "work 160 * 88 * 6", that is, said the waist height of 160 millimeters, leg width of 88 millimeters, waist thickness of 6 millimeters of I-beam. I-beam is divided into ordinary I-beam, light I-beam and H-beam three kinds of steel.

The wing edge of ordinary I-beam and light I-beam is gradually thinned from the root to the edge with a certain angle. Because of their cross-section size is relatively high, narrow, so the moment of inertia of the two main sleeves of the cross-section difference is large, therefore, generally only used in the plane of the web for bending members or will be composed of lattice-type force members. Axial compression members or perpendicular to the plane of the web and bending members are not used, which is its scope of application has great limitations.

I-beam is widely used in various building structures, bridges, vehicles, supports, machinery, etc..

C-beam

All of them are processed by cold bending of hot rolled plate and automatically processed by C-beam steel molding machine.

Thin wall and light weight, excellent section performance, high strength, compared with the traditional channel steel, the same strength can save material 30%.

C steel purlin is divided into five specifications of 80, 100, 120, 140, 160 according to different heights, and the length can be determined according to the engineering design, but considering the conditions of transportation and installation, the whole length is generally not more than 12 meters.

C-beam is widely used in steel structure building purlin, wall beams, can also be self-assembled into lightweight roof racks, brackets and other building components. In addition, it can also be used for columns, beams and arms in mechanical light manufacturing.

H-beam

H-beam is optimized by the development of I-beam steel section mechanical properties of a more excellent economic section of steel, especially section and the English letter "H" the same name. H-beam is divided into, wide-winged edge steel (HW), in the edge of the H-beam (HM), narrow-winged edge of the H-beam (HN), thin-walled H-beam (HT), H-beam (HU).

H-beam is a new type of economic construction steel. H-beam cross-section shape is economical and reasonable, good mechanical properties, rolled cross-section at all points of the extension of the more uniform, internal stress is small, compared with the ordinary I-beam, has the advantages of large cross-section modulus, light weight, saving metal, can make the building structure to reduce the 30-40%; but also because of the legs inside and outside of the leg is parallel to the leg end of the leg is a right angle, assembled and combined into a component, can save the workload of welding, riveting workload of up to 25%. Commonly used in large-scale buildings with large load-bearing capacity and good cross-section stability, such as brackets and foundation piles.

Advantages of H-beam

(1) Wide flange, large lateral stiffness. Strong bending resistance.

(2) The two surfaces of the flange are parallel to each other, which makes it easy to connect, process and install.

(3) Compared with welding ingot I-beam, it has low cost, high precision, small residual stress, no need for expensive welding materials and weld testing, saving about 30% of steel structure production cost.

(4) Under the same sectional load. The weight of hot rolled H-steel structure is reduced by 15%-20% compared with traditional steel structure.

(5) Compared with concrete (tong) structure, hot rolled H-steel structure can increase the use area by 6%, while the structural weight is reduced by 20% to 30%, which reduces the internal force of structural design.

(6) H-beam can be processed into T-beam, and honeycomb beams can be combined to form various cross-section forms, which greatly meets the needs of engineering design and production.

Square Tube

Square tube is a hollow square cross-section lightweight thin-walled steel tube, also known as steel refrigeration bending profiles. It is Q235 hot-rolled or cold-rolled steel strip or coil for the parent material by cold bending processing and molding, and then by high-frequency welding made of square cross-section shape and size of the steel. Hot rolled extra thick walled square tube in addition to wall thickening, its corner dimensions and edge straightness have reached or even exceeded the level of resistance welding cold-formed square tube. Comprehensive mechanical properties, weldability, cold, hot working properties and corrosion resistance are good, with good low-temperature toughness.

Round Tube

Open at both ends and has a hollow concentric circle section, its length and the perimeter of the larger steel. Round tube specifications with the external dimensions (such as outer diameter or side length) and inner diameter and wall thickness, its size range is very wide, from the diameter of a very small capillary tube to the diameter of up to several meters of the large round steel pipe.

Round pipe can be used in pipelines, thermal equipment, mechanical industry, petroleum and geological drilling, containers, chemical industry and special purposes. Commonly used structural round steel according to the size of the use of different specifications, small for decorative components, assembled roof frame, support components, net frame and tube truss, etc., large can be used for heavy steel plant steel concrete steel columns, large stadium tube trusses, etc.; round steel is another major use of the process pipeline, but there are generally special material and corrosion requirements.