Steel structure workshop H-shaped steel is a kind of economical section and high-efficiency section with more optimized cross-sectional area distribution and more reasonable strength-to-weight ratio. Because the section and the English letter "H" is the same name. H beam has been widely used for its advantages of strong bending resistance, simple construction, cost saving and light structural weight. H-shaped steel is mainly used in industrial factory, civil construction, municipal engineering, etc., and light H-shaped steel is very suitable for the manufacturing of containers, mobile houses, and various garages.
1. The expression method of hot-rolled H-beam:
H-beams are divided into three types: wide-flange H-beams (HK), narrow-flange H-beams (HZ) and H-beam piles (HU).
The expression method is: height H width B web thickness t1 wing plate thickness t2, such as H-beam Q235, SS400 200200812, it is expressed as a wide flange H-beam with a height of 200mm, a width of 200mm, a web thickness of 8mm, and a wing plate thickness of 12mm. The grade is Q235 or SS400.
Advantages of hot rolled H-beam:
H-shaped steel is a new type of steel for economic construction. H-shaped steel has economical and reasonable cross-section shape and good mechanical properties. During rolling, each point on the cross-section extends more uniformly and has low internal stress. Compared with ordinary I-beams, it has the advantages of large section modulus, light weight, and metal saving, which can make buildings The structure is reduced by 30-40%; because the legs are parallel inside and outside, and the ends of the legs are right-angled, they can be assembled into components, which can save welding and riveting work by up to 25%. It is often used in large buildings (such as factory buildings and high-rise buildings) that require large intercepting capacity and good cross-sectional stability, as well as bridges, equipment foundations, and supports.
The Hot-rolled H-beams can reasonably allocate the height-to-width ratio of the cross-section size according to different purposes, and have excellent mechanical properties and superior use performance.
2. Welding H-beam production process
Steel plate-automatic slitting-assembly-automatic submerged arc welding-flaw detection-flange correction-web correction-end surface processing-sand blasting and rust removal-painting. The automatic submerged arc welding production line is controlled by a microcomputer to ensure the dimensional accuracy of the H-shaped steel produced, and the quality of the welds meets the national standards. The steel structure building has a simple and lightweight structure, which expands the internal space of the building, saves steel, and has a short installation period. The roof and walls are made of color profiled steel plates, which makes the building more beautiful.
H-beam weight (2*b*t2+h*t1-2*t1*t2)*7.85*L/1000000
H-beam surface area (4*b-2*t1+2*h)*L/1000
The above is the H-beam commonly used in steel structure workshops.
