Phong Nguyen Guangxi Steel Structure Co., Ltd.
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FY STEEL STRUCTURE
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The difference between heavy steel and light steel
There is indeed no uniform standard for distinguishing between heavy‑steel and light‑steel structures; even many experienced designers and project managers often struggle to define the distinction clearly. However, we can make an informed judgment by considering a combination of quantitative criteria: Heavy‑steel structure: 1. Gantry crane lifting capacity: ≥25 tons. 2. Steel consumption per square meter: ≥50 kg/m². Light‑steel structure refers to lightweight steel structures fabricated using round steel and angle steel with dimensions smaller than L45×4 or L56×36×4.
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2018
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Comparison of the Advantages of Steel Structures and Concrete Structures
As a widely accepted consensus, compared with the currently prevalent use of concrete, steel structures offer several key advantages: first, they enable dry‑construction methods, conserving water, occupying less site space, and generating reduced noise and dust; second, their lighter self‑weight requires less earthwork for foundations, thereby minimizing damage to this precious resource; third, they significantly cut down on the use of concrete and masonry materials, reducing quarrying and stone extraction around urban areas and thus supporting environmental protection; fourth, at the end of their service life, steel structures produce far less solid waste upon dismantling, and scrap steel commands a high market value for recycling. At present, steel‑frame construction is among the least environmentally impactful structural systems, and it has been extensively adopted in Western countries, earning it the designation of “green building.”
Differences and Characteristics of European‑Style Cranes Compared with Traditional Cranes
1. From a structural design perspective: ① European‑style cranes: The main girder adopts a box‑type beam structure, offering a more rational design and higher strength. The hoist is securely attached to the bottom flange of the main girder, eliminating potential hazards, while also increasing the effective lifting height and thereby expanding the usable working space. The headroom clearance can reach up to 1.5 meters, wheel pressure is reduced, and fewer track beams are required. ② Conventional cranes: Limited by hoist design, they can only employ a traditional under‑hung I‑beam structure, which is structurally suboptimal and less efficient.
Main Processes in the Fabrication of Steel Structural Components for Buildings
As modern economies continue to develop and living standards steadily improve, human residential environments, housing conditions, and housing needs are constantly evolving. With increasingly stringent state controls over land-use systems—particularly in Shenzhen, where building land has become ever more scarce—structures are trending toward ultra‑tall designs. Reinforced concrete can no longer adequately meet the demands of architectural efficiency, structural integrity, design flexibility, or certain specialized functional requirements. Steel structures, owing to their light weight, high strength, excellent ductility and toughness, and ease of fabrication coupled with short construction timelines, have been widely adopted in high‑rise buildings; indeed, the structural systems of contemporary skyscrapers are increasingly shifting toward steel‑based solutions.
