What is an iron beam?
The beam is one of the most important and practical steel sections, which in the construction industry has the task of bearing the stresses caused by the forces applied to it. The iron beam has a cross section in the shape of the English letters I and H. In the buildings built on the basis of the metal frame, the iron beam has the task of bearing and transferring the loads that are imposed on the building.
Beams are versatile profiles that are often the preferred choice for designing columns, trusses, and beams due to their distinctive cross-sectional shape, alloy composition, and adherence to production standards. A beam consists of two main parts known as the flange and web, with the size and shape of these components determining the specific type of beam. The beam’s appearance and mechanical properties influence its various applications, including the IPN type.
Introduction of IPN iron beam
The IPN beam is similar to the English letter I. .” Its inclined wings are designed with varying thickness, starting thin and gradually thickening towards the center of the beam IPN beams, also referred to as S Beams or S Shapes, are produced according to American standards and widely used in the shipbuilding industry. Countries such as China, Russia, Ukraine, and Germany adhere to this standard for manufacturing their beams.
In an IPN beam, the thickness at different points is not uniform and increases gradually from the thinner section of the wing towards the end of the beam. IPN beams can be produced within the range of 80 to 550 mm, although specific dimensions may be limited. . Due to their properties, IPN beams find extensive usage in the shipbuilding industry.
Beams consist of a web and two wings. Wing means the sides and edges of the beam, and Web means the part that is placed between two edges. The web is considered the most crucial component of the iron beam The web of the IPE steel beam withstands bending loads in the structure, while the flanges bear shear forces.
Appearance characteristics of IPN beam
The appearance of the IPN iron beam is English I-shaped, and the difference with the other type of iron beam (IPE) is the thickness of the wings. In the IPE beam, the thickness of the wings is equal, but the thickness of the wings in the IPN beam is not the same in all parts of the wing. This beam is produced according to Chinese and Russian standards. The difference between the IPN beam and the IPE beam is that in the IPN beam, the thickness of the wing decreases with distance from the beam. The height of this beam is 600-80 mm.
Types of beams are typically named based on their appearance, cross-section, and other defining characteristics.
Dimensions, weight and static values of IPN beams
Dimensional tolerances
Applications of IPN beams
IPN beams are manufactured in accordance with specific standards, resulting in a variable cross-sectional area ranging from 8 to 60 square centimeters.
Consequently, IPN beams find diverse applications due to their high load-bearing capacity. Their usage enhances structural resistance against human errors and natural disasters. Some notable applications include:
- • Construction of various types of ships
- • Dam and wharf construction
- • High-rise tower construction
- • Implementation in trusses, columns, and roofs.
Technical specifications of IPN beams:
Typically, IPN beams are produced in lengths ranging from 12 meters. They have a height range of 80 to 550 mm and varying wing widths from 42 to 200 mm. The dimensional specifications of INP beams produced in Iran adhere to standard lengths of 4 to 12 meters (custom products can reach up to 15 meters with agreement between the manufacturer and buyer). The height ranges from 80 to 550 mm, and the width ranges from 42 to 200 mm.
For detailed technical specifications of INP beams produced in Iran, you can refer to the national standard of Iran No. 3277, titled “Hot-rolled narrow inclined wing beam – characteristics and test methods.”
Types of IPN beams based on dimensions:
IPN beams can be classified based on various aspects such beam size, construction alloy used, factory or country of beam manufacturer, and more. A common classification based on dimensions is as follows, although sizes 12, 14, 16, 18, and 20 are generally the most common.
Advantages of using IPN beams
The primary advantage of IPN beams lies in their wing shape. The non-uniform thickness of the wings (forming a conical shape) enhances the beam’s resistance to bending at critical points in the structure. Other advantages shared with other beams include:
Advantages of using IPN beams:
- • Compatibility for connecting to other main or secondary members of the building.
- • Reduced operational costs through beam usage.
- • High resistance and strength, like other beams.
- • Easy installation, leading to faster construction.
- • Flexibility for redevelopment after project completion.
- • Occupying less space compared to concrete structures.
Disadvantages of using IPN beams:
While the non-uniform wing thickness is a notable advantage, it can also be considered a disadvantage. The greater thickness of the wings makes connecting IPN beams to other structural members more challenging, leading engineers to prefer IPE beams in some cases. The main disadvantages of IPN beams include:
- • Difficulty in connecting IPN beam wings to other parts of the structure compared to other beams.
- • Relatively low structural capacity in horizontal or X-axis mode compared to vertical use (Y-axis).
- • Limited torsional resistance.
Additionally, like all beams, IPN beams face common disadvantages, including:
- • Decreased resistance with significant increases in ambient temperature.
- • Susceptibility to unfavorable weather conditions, leading to dimensional reduction in low temperatures or corrosion in humid environments.
- • Inherent tendency to bow, which is a weakness shared by most beams.
- • Welded beam joints may not possess sufficient strength, risking weld failure. Using screws and rivets for connecting parts is a recommended alternative. Production Processes of Beams in the Construction Industry:
The prices are announced weekly at the beginning of the week, and to know the daily price, get a discount and place an order, just contact the experts of the collection.
Product prices - domestic market
| نام محصول | سایز | وزن هر شاخه (kg) | طول هر شاخه (m) | قیمت |
|---|---|---|---|---|
| تیر آهن IPN | 10 | 90-100 | 12 | - |
| تیر آهن IPN | 12 | 120 | 12 | - |
| تیر آهن IPN | 14 | 134 | 12 | - |
| تیر آهن IPN | 16 | 170 | 12 | - |
The prices are announced weekly at the beginning of the week, and to know the daily price, get a discount and place an order, just contact the experts of the collection.
In export products, it is possible to change the specifications (size and weight) according to the customer's needs. Call for more information.
Product prices - foreign market (export)
| نام محصول | سایز | وزن (kg) | طول هر شاخه (m) | قیمت هر تن (دلار) |
|---|---|---|---|---|
| تیر آهن IPN | 10 | - | 12 | - |
| تیر آهن IPN | 12 | - | 12 | - |
| تیر آهن IPN | 14 | - | 12 | - |
| تیر آهن IPN | 16 | - | 12 | - |