Hot-rolled I-beam
Hot-rolled I-beams (also known as I-beams) are hot-rolled steel with an "I"-shaped cross-section. They have the advantages of strong bending resistance, good structural stability, and light weight, and are widely used in many fields.
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Hot-rolled I-beam
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Details Introduction
Hot-rolled I-beams (also known as I-beams) are hot-rolled steel with an "I"-shaped cross-section. The cross-section is characterized by wide flanges and thin webs. They have the advantages of strong bending resistance, good structural stability, and light weight. They are widely used in many fields. The following are the main uses and specific scenarios:
I. Construction Engineering Field
This is the most important application field of hot-rolled I-beams, and its core function is to serve as load-bearing structural components:
Building construction: Used for the frame structure of large factories, warehouses, and high-rise buildings, it undertakes the functions of main load-bearing components such as beams and columns. For example, the crane beams of industrial plants and the load-bearing beams of workshops use their bending resistance to withstand the load of roofs, equipment, and personnel.
Bridge construction: In the upper structure of small and medium-sized bridges, it serves as the main beam or beam to support the bridge deck load and transmit it to the bridge pier. Its lightweight characteristics can reduce the weight of the bridge and reduce the cost of infrastructure construction.
Municipal engineering: Used for the structural framework of large municipal facilities such as subway stations, underground pipe corridors, and sewage treatment plants to resist complex loads such as soil pressure and water flow impact.
II. Mechanical Manufacturing Field
Equipment frame: In heavy machinery (such as machine tools, presses, cranes), it serves as a frame or support structure to provide a stable force-bearing foundation. For example, the boom of a crane and the bed of a machine tool often use I-beams to enhance rigidity.
Transmission system components: The support and guide rails of the transmission shafts of some large machines use their cross-sectional characteristics to ensure stability during the transmission process.
III. Transportation Field
Vehicle manufacturing: Used in the frame beams of large trucks and container trucks to balance the weight of the vehicle and the load of the goods and improve the structural stability of the vehicle during driving.
Railways and tracks: The auxiliary support structure of railway tracks (such as track beams and platform load-bearing frames) needs to withstand train vibration and personnel load. The fatigue resistance of I-beams makes them suitable.
IV. Steel Structure and Temporary Facilities
Steel structure components: As a component of truss and grid structures, it is combined with other steel materials (such as angle steel and channel steel) to build the roof or skeleton of large-span buildings such as gymnasiums and exhibition centers.
Temporary support: In building construction, it serves as the beam of scaffolding and formwork support, or the load-bearing structure of temporary trestle bridges. It can be quickly assembled and has reliable load-bearing capacity.
V. Other Special Scenarios
Mining and metallurgy: The support structure of mine roadways and the load-bearing frame of metallurgical equipment need to withstand heavy loads and harsh environments. The high strength characteristics of I-beams meet the needs.
Energy engineering: The auxiliary load-bearing structure of offshore drilling platforms, the tower support components of wind turbines, etc. need to take into account both strength and lightweight. I-beams are a common choice.
Summary
The core application of hot-rolled I-beams lies in its **“efficient load-bearing”** characteristics - by optimizing the cross-sectional shape, it maximizes bending and shear resistance while reducing its own weight, so it is widely used in structural scenarios that need to withstand lateral loads. Different specifications (such as light, ordinary, and heavy) of I-beams can be flexibly selected according to the size of the load, span length, and other needs. They are indispensable steel products in modern engineering construction.
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ASTM A53 is the 'Standard Specification for Black and Hot-Dipped, Zinc-Coated, Welded and Seamless Steel Pipe' established by the American Society for Testing and Materials (ASTM), primarily used in pressure piping and mechanical structure fields.
This standard is issued under the fixed designation A500/A500M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (ε) indicates an editorial change since the last revision or reapproval.
Applicable to: construction, machinery manufacturing, photovoltaic, furniture, special vehicle frame manufacturing, container manufacturing, decoration, etc.
This standard specifies the manufacturing requirements for seamless and welded pipes for pipeline transportation systems in the petroleum and natural gas industries, including two product specification levels (PSL1 and PSL2). This specification does not apply to cast iron pipes.
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