Angle steel
Sections or Structural Shapes are strip-shaped materials produced through plastic forming processes such as rolling, extrusion, and casting, resulting in specific cross-sectional shapes and dimensions. They are one of the most common product forms in industries like steel and non-ferrous metals (e.g., aluminum, copper), serving as the "skeleton" that underpins modern industrial and architectural structures.
Product Categories:
Profile
Keywords:
Detailed introduction
Main production processes
Hot Rolling:
Process: The metal billet is rolled at high temperatures (above the recrystallization temperature).
Features: High production efficiency, low costs, and a wide product size range. However, the surface has an oxide film, resulting in slightly lower dimensional accuracy.
Main products: Large and medium-sized steel sections, such as H-beams, I-beams, channel bars, and angle steels.
Cold Rolling/Cold Bending:
Process: Using hot-rolled coil or strip steel as the raw material, the material is cold-formed or bent into shape via a cold bending machine at room temperature.
Features: Smooth surface, high dimensional accuracy, and high strength. However, the cross-sectional shapes are relatively simple, often consisting of thin-walled components.
Main products: C-channel steel, Z-channel steel, square tubes, rectangular tubes, and more.
Extrusion:
Process: Primarily used for non-ferrous metals (such as aluminum). The heated ingot is placed into an extrusion press, where it is forced through a die of a specific shape under intense pressure.
Features: Capable of producing solid or hollow profiles with extremely complex cross-sectional shapes, offering precise dimensions and excellent surface quality.
Main products: Various architectural aluminum profiles, industrial aluminum profiles, and aluminum profiles for doors, windows, and curtain walls, among others.
Product Categories (by Material and Cross-Section)
There is an extremely wide variety of profile types, and the most common classification method is as follows:
(1) Classified by Material
Steel profiles: Widely used, offering high strength at a low cost. Examples include carbon structural steel and low-alloy high-strength steel.
Aluminum profiles: lightweight, corrosion-resistant, easy to process, and aesthetically pleasing. They are primarily used in architectural doors and windows, curtain walls, as well as in electronics, machinery, and aerospace applications.
Copper profiles: Excellent electrical and thermal conductivity, with strong corrosion resistance. Primarily used in the power, electronics, and telecommunications industries.
Plastic profiles: Insulating, corrosion-resistant, and heat-insulating. Primarily used in the manufacturing of doors and windows (e.g., UPVC window frames).
(II) Classified by Cross-Section Shape (This is the most fundamental classification method)
Category | Main Products | Illustrative example | Features and Applications |
Simple section profiles | Round steel, wire rod, flat steel | ⬤ | The cross-section is simple, primarily used as a raw material for reprocessing items such as reinforcing bars, bolts, and nuts. |
Complex-section profiles (structural steel) | H-shaped steel | X | The flange is parallel on both the inner and outer sides, providing excellent resistance to bending—superior to that of I-beams. It is used in load-bearing structures such as columns and beams. |
I-Beam | I | Classic structural material, but with sloped flanges; its stability is slightly lower than that of H-beams. Primarily used in beam structures. | |
Channel Steel | [ | The cross-section resembles a groove, designed for use in brackets, frames, tracks, and similar applications. | |
Angle Steel | L | Divided into equilateral and non-equilateral types, used for trusses, supports, connectors, and more. | |
Railway track |
| Specifically designed for railway tracks. | |
Cold-formed steel | C-channel steel, Z-channel steel |
| Thin-walled and lightweight, it is primarily used for building purlins and wall beams. |
Square tubes, rectangular tubes | ▭ | Offers excellent bending and torsional resistance, with a sleek, aesthetically pleasing appearance—ideal for structural frameworks and decorative applications. | |
Non-ferrous metal profiles | Aluminum profiles | ⏣ | A wide variety of products, including architectural profiles (window frames) and industrial profiles (assembly line frameworks, radiators). |
Core Performance Features
High structural efficiency: Scientifically designed cross-sectional shapes (such as H-beams and I-beams) optimize material distribution while maintaining strength and stability, allowing the structure to withstand maximum loads using minimal materials.
Excellent mechanical performance: Featuring superior flexural, torsional, and compressive strength, it is the ideal material for constructing load-bearing structures.
Easy to connect and install: Standardized shapes and dimensions allow for quick assembly using methods like bolted connections, welding, or riveting, boosting engineering efficiency.
Excellent machinability: It can undergo secondary processes such as cutting, drilling, stamping, and bending, making it adaptable to various engineering needs.
Main application areas
Profiled materials are the cornerstone of industrial civilization, with applications found everywhere:
Building structures (largest market):
Factory buildings, super-tall structures, and sports venues: H-beams and I-beams are used for main beams and columns; C-sections and Z-sections serve as purlins.
Bridges: Box girders and H-shaped steel are used for the bridge structure.
Mechanical Manufacturing and Equipment Framework:
Racks, bases, and guardrails for various industrial equipment (commonly made from square tubes, rectangular tubes, and channel steel).
Automotive beams, ship hull frames.
Infrastructure and Transportation:
Power transmission towers: Angle steel is the primary material.
Railway system: Steel rails.
Architectural Decoration and Home Interiors:
Windows and Doors, and Curtain Walls: Aluminum alloy profiles are the clear mainstay.
Stairs, railings, furniture: Use stainless steel pipes, square tubes, and more.
Industrial assembly line:
Modular Assembly Framework: Utilizing standard "industrial aluminum profiles" paired with specialized connectors, it enables rapid construction of equipment housings, workbenches, and conveyor systems.
Product Applications
Home appliance industry
Kitchen Equipment Industry
Amusement Ride Industry
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Automotive industry
Construction industry
Construction Materials Industry
Amusement Ride Industry
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Mechanical Manufacturing Industry
Railway Systems Industry
Pipeline Systems Industry
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