ZCM Metals' Steel Industry Solutions
Profile Products
Profile refers to a solid straight bar with a certain cross-sectional shape and size after plastic processing. There are many varieties and specifications of profiles, and they are widely used, occupying a very important position in rolling production.
Profiles are objects with a certain geometric shape made of iron, steel, and materials with certain strength and toughness through rolling, extrusion, casting, and other processes. This type of material has a certain appearance size, a certain cross-section shape, and certain mechanical and physical properties. Profiles can be used alone or further processed into other manufactured products, often used in building structures and manufacturing installations.
Mechanical engineers can select the specific shape, material, heat treatment state, mechanical properties, and other parameters of the profile according to the design requirements. They then divide the profile according to the specific size and shape requirements, followed by further processing or heat treatment to meet the design accuracy requirements.
The materials, specifications, and dimensions of profiles can refer to the corresponding national standards.
I-Beam
I-beam is mainly divided into ordinary I-beam, light I-beam, and wide flange I-beam. According to the flange and web height ratio, it is divided into wide, medium, and narrow wide flange I-beams. The first two production specifications are for 10-60, that is, the corresponding height is between 10-60 cm.
At the same height, the light I-beam has a narrow flange, thin web, and light weight. The wide flange I-beam, also known as H-beam, has a cross-section characterized by two parallel legs, and the inner leg is without slope. It belongs to the economic section steel, and is rolled in the four-high universal mill, which is why it is also known as the “Universal I-beam.” Ordinary I-beam and light I-beam have become national standards.
An I-beam, as the name suggests, is an “I”-shaped section of steel. The upper and lower flange inner surfaces are tilted, generally at a 1:6 ratio, so that the flange is thinner on the outside and thicker on the inside. Therefore, the section characteristics of the I-beam in the two main planes differ greatly, making it difficult to fully utilize its strength characteristics in application. Although thickened I-beams have appeared in the market, the I-beam structure limits its torsional performance.
The specification is expressed by height × leg thickness × waist thickness. The number can also be used to indicate the main size of the specification. For example, an 18 I-beam refers to an 18 cm high I-beam.
If the height is the same, the I-beam can be expressed with an angle code such as A, B, or C added after the number, such as 36A, 36B, or 36C.
I-beams are divided into ordinary I-beam, light I-beam, and wide flange I-beam. According to the height of the flange and web, the ratio is divided into wide, medium, and narrow width flange I-beams. The former two production specifications range from 10-60, corresponding to heights between 10 cm and 60 cm.
H-Beam
H-beam is a kind of economic section with a more optimized section area distribution and a more reasonable ratio of strength to weight. Because all parts of the H-beam are arranged at right angles, the H-beam has the advantages of strong bending resistance, simple construction, low cost, and light weight.
H-beam is widely used in steel structure construction and has many differences compared with I-beam. The first is the flange. The second is that the inner surface of the flange has no slant, and the upper and lower surfaces are parallel. The cross-section characteristics of H-beam are obviously superior to those of traditional I-beam, channel steel, and angle steel.
The two outer edges of the H-beam have no slope and are straight on the inside. This makes H-beam welding and splicing easier than I-beam operation. The unit weight and better mechanical properties can save a lot of material and construction time. The I-beam section, which is subjected to straight pressure and tensile forces, has a narrow wing plate and cannot resist torsion. H-steel, on the other hand, has its advantages and disadvantages.
Channel
Channel steel is a long strip of steel with a groove-shaped cross-section. It belongs to carbon structural steel for construction and machinery. It is a section steel with a complex cross-section.
Channel steel specification representation method:
For example, 120535 means a channel steel with a waist height of 120 mm, a leg width of 53 mm, and a channel steel with a waist thickness of 5 mm, or 12 # channel steel.
For channel steel with the same waist height, there are several different leg widths and waist thicknesses, which need to be distinguished by adding a, b, and c on the right side of the model.
Such as 25a#, 25b#, 25c#, etc. It is mainly used in building structures, curtain wall engineering, mechanical equipment, and vehicle manufacturing, etc.
Sheet Pile
According to the production process, steel sheet piles are divided into two types: cold-formed steel sheet piles and hot-rolled steel sheet piles. The cold-formed steel sheet pile is formed by continuous roll forming by the cold-formation unit, and the side locks can be continuously lapped to form a steel structure of the sheet pile wall. It uses thinner plates and is processed by the cold-formation unit. Its production cost is low, and the price is cheap, and the sizing control is also more flexible.
In engineering construction, the application range of cold-formed steel sheet piles is relatively narrow, and most of them are only used as supplementary materials. Features of cold-formed steel sheet piles: According to the actual situation of the project, the most economical and reasonable cross-section can be selected to realize the optimization of engineering design and save materials compared with hot-rolled steel sheet piles with the same performance.
The steel strip is subjected to continuous cold-bending deformation to form a Z-shaped, U-shaped, or other shape in section, which can be connected to each other through the lock for building foundation plates
Rails
Steel rails are the main components of railway tracks. Its function is to guide the wheels of the rolling stock to move forward, bear the huge pressure of the wheels, and transmit them to the sleepers. The ZMJT051 rail must provide a continuous, smooth, and least resistant rolling surface for the wheels. In the electrified railway or automatic blocking section, the rail can also be used as a track circuit.
The type of rail is expressed in kilograms per meter of rail mass. Rails commonly used on railways are 75kg/m, 60kg/m, 50kg/m, 43kg/m, and 38kg/m.
Rail parameters:
Head height and protrusion: +0.5mm
Rail head width: +0.5mm
Rail waist thickness: +0.75mm -0.5mm
Rail bottom width: +1.0mm -2.0mm
Rail waist height: +0.5mm
Height: +0.8mm
Length: +6.0mm
Bolt hole size, the distance from each bolt hole to the end of the rail, and the position of the bolt hole in the height direction of the rail: +1.0mm
Section is not symmetrical to its vertical axis.
Rail bottom: 10mm
Rail head: 0.5mm
Other size: +0.5mm