H-shaped steel is an economical and efficient section with more optimized section area distribution and more reasonable strength-to-weight ratio, so it is named because its section shape is the same as the English letter "H". Because the parts of H-shaped steel are arranged at right angles, H-shaped steel has the advantages of strong bending resistance, simple construction, cost saving and light structural weight in all directions, and has been widely used. H-shaped steel is a kind of steel widely used in construction engineering, and its weight calculation method is relatively simple, which can be calculated according to the following formula: H-shaped steel weight (kg/m) =0.00785×[H × (b1+b2) /2×t1+ (H-T1) ×b3×t2]
In the formula, h is the height of H-shaped steel, b1 and b2 are the width of the upper and lower flange, t1 is the thickness of the upper and lower flange, b3 is the width of the waist plate, and t2 is the thickness of the waist plate. The steel density is 7.85g/cm3.

Application Case:
Suppose there is a piece of H-shaped steel with a specification of 200×200×8×12. 200 means that the height of H-shaped steel is 200mm, 8 means that the thickness of upper and lower flange is 8mm, and 12 means that the thickness of waist plate is 12mm. The width of upper and lower flange is equal, that is, b1=b2=75mm, and the width of waist plate is b3=10mm. According to the above formula, the weight of the H-shaped steel can be calculated: H-shaped steel weight
(kg/m) = 0.00785 x [200 * (75 + 75) / 2 * 8 + (200-8) x 10 x 12] = 50.1 kg/m
Therefore, the H-shaped steel weighs 50.1kg per meter.
If you need to calculate the total weight of H-shaped steel, then it can be converted according to the length, such as the length of H-shaped steel is 6 meters, then the total weight is 50.1kg/m×6m=300.6kg.
H-shaped steel size expression method:
The size representation of H-shaped steel is actually very simple, usually the width of H-shaped steel multiplied by the height multiplied by the overall thickness, and then multiplied by the thickness of the entire steel belly. Generally speaking, the size representation of this steel is H=abc*d, where each letter represents a corresponding size. For example, the size of a piece of H-shaped steel is 200*100*5*8mm, that is, the height of this H-shaped steel is 200mm, the width is 100mm, the thickness of the web is 5mm, and the thickness of the flange is 8mm. Through this method, you can intuitively understand the specific size of H-shaped steel, and it is more convenient to purchase and use.
This clear representation of dimensions is not only easy to remember and communicate, but also provides great convenience for architectural design and construction. When choosing the right H-shaped steel, you can accurately find the steel specifications that meet the requirements according to the needs of the architectural design.
The difference between H-beam and I-beam:
H-beam steel and I-beam steel are commonly used steels, but there are obvious differences in structure and use.
First, the section shape of H-shaped steel is the same as the letter H, and the section shape of I-shaped steel is like the letter I. Due to the wider flange and thicker web of H-beam steel, its bending and shearing capacity is stronger than that of I-beam steel, and it is more suitable for bearing larger loads.
Secondly, the classification of H-beam steel is more diverse. According to the width of the flange, H-beam steel can be divided into three kinds: wide flange, middle flange and narrow flange. I-steel belongs to the ordinary I-steel, the classification is relatively simple.
Finally, H-beam steel has more advantages in strength-to-weight ratio, due to the superior cross-section performance of H-beam steel, under the same load conditions, H-beam steel uses less steel, which can save material costs and improve economic benefits in practical applications.
Steel purchase precautions:
In the purchase of steel, you need to pay attention to the following aspects:
First of all, pay attention to the structural parts of the steel. There are many types of steel, and the appropriate quality of steel should be selected according to the actual situation. For example, the structure that needs to bear a large load should choose steel with high strength and good toughness.
Secondly, for different use environments, we should also make corresponding judgments. For the structure working in a low temperature environment, steel with good low temperature resistance should be selected to prevent brittle fracture of steel under low temperature conditions. For the structure working in a high temperature environment, the steel with good high temperature resistance should be selected to ensure that the steel does not deform and corrode under high temperature conditions. In addition, in the purchase of steel, but also pay attention to the purchase of regular manufacturers of products, do not coax cheap and buy inferior steel, which will not only affect the safety of the building structure, but also may bring serious security risks. Therefore, when purchasing steel, we should try to choose regular manufacturers with good reputation and guaranteed quality.
H-shaped steel is widely used in modern construction projects, its size expression method is simple and clear, and it is necessary to choose the appropriate specifications and models according to the specific needs of the purchase, pay attention to the structural performance and environmental adaptability of the steel, and choose products produced by regular manufacturers to ensure the safety and stability of the building structure.