corner

corner

A profile whose cross-section has two perpendicular sides is called a corner, which is used in different structures. This section is one of the most important building materials and profiles that are used in a composite and individual form in civil, construction and industrial projects.

Angles are steel sections whose cross section consists of two perpendicular sides. They are produced by hot and cold rolling methods. Its task is not only to connect different parts of the structure to each other, but their main role is to even out the load distribution in order to prevent the destruction of the structure, and since the structures are built in various environments, they should be adjusted in each environment according to weather conditions and other factors. Use a specific type or gender of them. Another important point when buying is their angle because it can affect the weight of the structure.

Corner applications

It should be noted that it is usually used in making all kinds of frames, bases, column bases for creating fences, making stairs, making masts and trusses, making lids and light roofs, making gables, making high beads and most importantly for making back straps and Side braces between columns use this product. It is better to know that its metal type is widely used in structures. In addition, the metal type of this product is used as a back strap or stiffener to connect the beam and column.

Sometimes it is used as a restraining force from beam to column. Sometimes steel structures are used as beams to support distributed loads. Among its other uses, the following can be mentioned:

They use these products in sizes of 50 to 150 mm for various connections

Using the bite type of this product in elevator structures

Using corner beams in chromite roofs

Use in windbreaks and LSF structures

Simple connections in the structure

Construction of columns and trusses

Industrial machinery

Curb of clay walls

Power transmission towers

Technical specifications of corner types

Corners are divided into two types in terms of appearance, which can be distinguished by their appearance.

Equal wing angle

Uneven wing angle

Equal wing angle:

As it is clear from the name, the profiles whose two vertical wings are the same and with the letter L only one number (L) is inserted are called equal wing profiles. For example, the symbol L300 indicates a profile with an equal wing and a size of 300 mm.

Uneven wing angle:

In some cases, it is not possible to use a profile with an equal wing, that’s why the unequal type is used. This type of product is available in the market with ST37, ST52, ST44 standards, which is specified in the building map by inserting the size of both wings next to the letter L. For example, L 200*300 indicates a profile with two wings of 300 and 200 mm.

Galvanized corner

This is a type of iron piece that is coated with zinc, so it will not rust even if the coating is removed.

An electrochemical cell combination is formed between iron and zinc, in this case, zinc plays the role of anode (instead of iron) and iron plays the role of cathode. This type is used in buildings that are in a situation where there is a lot of rust.

Spiral corner

The spiral angle is light and is available in sizes 20x20x20 to 50x50x50. This type is known in the market as hot-rolled with equal wings. Factories like Shokfete produce this type of steel with the lowest tolerance

Stainless corner

Iron is found in the form of iron, which makes its price cheap. But pure iron has no resistance to factors such as weather and rusts very quickly.

Therefore, we should not use pure iron in construction and iron alloys should be used. Alloy is produced from the combination of several metals. The most common iron alloy is steel. The composition of steel consists of iron and a small amount of carbon (0.1 to 1.5%). It is interesting to know that there are 3500 different types of steel in the world.

A special type of steel must be used to produce a stainless steel corner. The compounds that are used in this type are: chrome, carbon, nickel and iron, and keep in mind that the amount of each of these materials is different in different manufacturing plants.

Steel corner

This type of corner, like a steel corner, is produced in two forms: fabric and pressed. There are some places that have high humidity, if a steel corner is used in these environments, after a short period of time, the corner will rust and corrode; For this reason, they go for steel corners in these environments.

Steel corners with 304 alloy have little carbon, and in order to produce this type, they use 304 stainless steel corners. The surface of these corners is smooth. Steel corners are usually used in the construction of frames, tanks, cabinets, and enclosures, and they are most commonly used in the marine, chemical, and petrochemical industries.

The strength and efficiency of the steel angle with alloy 316 is higher than that of the 304 steel angle, and the reason for that is the use of a higher amount of carbon in it. They are used in the production of shelves and building structures, and because it does not rust in acidic environments, it is widely used in marine structures and submarines.

Steel tile corner, sometimes around the columns are tiled with tile corner. In addition to preventing the tile from filling up, this also gives it a special beauty. Therefore, in general, when a steel corner is used to protect the facade and stone, it is called a tile steel corner.

Perforated steel corner has holes of different sizes in the shape of oval and circle. Among its uses, we can mention its use in shelves, garage door openers and equipment bases.

Aluminum corner

These corners are made of aluminum and are usually produced in dimensions of 50 to 150 mm. Among their applications, we can mention their use in connections between bridges with columns or connections between carriers and beams. The most important features of these angles are as follows:

low weight

High resistance to corrosion and different weather conditions.

They are non-magnetic, that’s why they are used in masts.

They have a unique beauty, that’s why they are widely used in interior and exterior decoration.

Drilling, cutting and welding are easily done on them.

Corner of Percy and Fabric

This steel product is one of the important products used in various industries, such as electricity, construction and road construction, which is produced by two methods: fabric and pressing:

1. 1. Pressed corner: To produce a corner with this method, the rolled sheet is cut, pressed, and finally this corner is produced using a roll forming machine.
2. 2. Fabric corner: In order to have a fabric corner, in the first stage, ingots with a specific cross-section and length are poured into thermal furnaces, and after they reach a certain desired temperature, they pass through the racks that are special for rolling. they do This will reduce their cross-section and increase their length. Finally, they pass through the middle and final climbing racks and become a corner. Cutting devices are installed at this stage, which cut the manufactured product in the form of scissors to the desired length. This steel product is usually produced in sizes of 6 to 12

zero angle

The zero corner, which is also known as the punched corner and the zero corner, as an essential structure in formwork, is responsible for connecting the metal forms perpendicular to the outer part of the concrete in contact with the concrete, as well as connecting the hanging forms. This angle is usually produced in lengths of 0.5, 1, 1.5 and 2 meters and 4 mm thick.

What is Todli corner?

Todli corner is the corner of a bite or corner, which actually after producing a corner with a press or fabric, it is cut into specific lengths depending on the need, which is usually 20 to 30 cm, using guillotine scissors. In fact, this crushed corner is mostly used for making elevators and in the construction industry for the strength of the building’s column and floor.

Corner specifications

This steel product is usually identified through two characteristics. Angle specifications are as follows

wing size

thickness

We express this issue clearly in a simple example. For example, we have 30x30x30. This means that the size of the wings is 30×30 and the thickness considered for each wing is 3 (the grade of this steel product is from 3 to 20).